Note: There are two manners for numbering the rulers of this noble family: birth numbers or regnal numbers. Albeit the birth number is more commonly used, the table uses the sequential regnal numbers presented in Stammliste des Hauses Schwarzburg, to avoid confusion or holes in the counting. According to this alternative numbering, there's a different counting for Schwarzburg, Käfernburg (from 1223 onwards) and Hallermund (as an already existing county which came into the family by marriage). However, even this alternative counting is not perfect: it counts only the ruling members, but by birth order, which means that people with higher count may start to rule first than others. These cases will be pointed out in the table. RulerBornReignRuling partConsortDeathNotes Sizzo I c.1000?Son of Sizzo or Güntherc.1030 1050County of SchwarzburgUnknownat least one childc.1050aged 49–50? Probably the founder of the family. Sometimes attributed to his possible father, Günther. Sizzo II c.1030?Son of Sizzo Ic.1050 1118County of SchwarzburgUnknownat least one childc.1118aged 77–78? Günther I c.1050?Son of Sizzo IIc.1070 1109County of KäfernburgMatilda Yaropolkovna of Turov Pinskafter 1087two childrenc.1109aged 58–59?Cited as Count of Käfernburg, and predeceased his father. Sizzo III 1093Son of Günther I and Matilda Yaropolkovna of Turov Pinsk1109 1118County of KäfernburgGisela of Berg(d.20 March 1142)c.1133four children19 June 1160aged 66–67 Reunited Schwarzburg after the death of his grandfather, Sizzo II.1118 – 19 June 1160County of Schwarzburg Henry I 1130First son of Sizzo III and Gisela of Berg19 June 1160 – 26 July 1184County of SchwarzburgA lady Winzenburg1170one child26 July 1184aged 53–54Children of Sizzo III, divided the inheritance. After Henry I's death, his brother reunited Schwarzburg once more. Günther II 1135Second son of Sizzo III and Gisela of Berg19 June 1160 – 26 July 1184County of KäfernburgAgnes of Saarbrückenfour childrenAdelaide of Loccum Hallermund1178three children1197aged 31–3226 July 1184 – 1197County of Schwarzburg Henry II the Elder c.1160First son of Günther II and Agnes of Saarbrücken1197 – 20 February 1236County of SchwarzburgIrmgard of Weimar Orlamünde1211seven children20 February 1236aged 75–76? Children of Günther II, divided their inheritance. Gunther III co ruled with his older brother Henry until 1216. Ludolf inherited Hallermund through his mother. Günther III c.1160Second son of Günther II and Agnes of Saarbrücken1197 1216County of SchwarzburgDietburg of Anhalt(1169 1228)two children1223aged 62–63?1216 1223County of Käfernburg Ludolf II 1180Son of Günther II and Adelaide of Loccum Hallermund1197 – 15 November 1256County of HallermundUnknownfour childrenKunigunde of Pyrmontone child15 November 1256aged 75–76? Henry III the Younger 1219/20First son of Henry II and Irmgard of Weimar Orlamünde20 February 1236 – 1258/9County of SchwarzburgSophie of Hohnsteinc.15 March 1247one child1258/59aged 38–40 Children of Henry II, divided their inheritance, but the childless death of Henry III made possible for Gunther IV to reunite the land once more. Günther IV 1219/20Second son of Henry II and Irmgard of Weimar Orlamünde20 February 1236 – 1258/9County of BlankenburgSophianine children1275/78aged 38–401258/9 1275/8County of Schwarzburg Günther IV c.1200?First son of Günther III and Dietburg of Anhalt1223 1268/9County of KäfernburgMatilda of Beichlingenbefore 10 December 1254two children1268/9aged 68–69?Children of Gunther III of Schwarzburg, divided their inheritance at Kafernburg. Albert I c.1200?Second son of Günther III and Dietburg of Anhalt1223 1255County of WieheUnknownfive childrenc.1255aged 54–55 Albert II c.1240?First son of Albert I1255 c.1285County of WieheUnmarriedc.1285aged 44–45?Children of Albert I, divided their inheritance. Frederick c.1240?Second son of Albert I1255 1312Elisabeth of Neuenburgbefore 8 July 1280two children1312aged 71–72? Berthold c.1240?Third son of Albert I1255 – 7 August 1312County of Wiehe(at Rabenswald)Wilibirg of Helfenstein1277no children7 August 1312aged 71–72? Gisela c.1240?Daughter of Albert I1255 1278County of Wiehe(at Hardegg)Burchard VI, Burgrave of Magdeburgc.1260?at least one child1278aged 37–38?Rabenswald rejoined Wiehe; Hardegg annexed to Magdeburg Ludolf III c.1200?Son of Ludolf II and Kunigunde of Pyrmont15 November 1256 – 1266County of HallermundJutta of Hoyasix children1266aged 65–66? It's possible that, after his death, his children divided the county. Wilbrand III 1250?First son of Ludolf III and Jutta of Hoya1266 1280County of Hallermund(half 1)Adelaide of Adenoysfive children1280aged 29–30? Sons of Ludolf III, possibly divided the county. Ludolf IV became canon at Hildesheim in 1275, possibly abdicating from the co ruling in that year. Ludolf IV 1250?Second son of Ludolf III and Jutta of Hoya1266 1275County of Hallermund(halves 1 and 2? )Unmarried c.1291aged 40–41? Gerhard I the Elder 1250?Third son of Ludolf III and Jutta of Hoya1266 1326County of Hallermund(half 2)Unknownseven childrenGerburg of Homburgbefore 14 September 1317two children1326aged 75–76? Günther V the Elder c.1230?Son of Günther IV and Matilda of Beichlingen1269 1273/5County of KäfernburgMatilda of Schwarzburgc.1250?four children1273/5aged 43–45? Günther VI the Elder c.1250?First son of Günther V the Elder and Matilda of Schwarzburg1273/5 – 1289County of Käfernburg(with County of Arnstadt(half 1)) Sophia of Lüchowtwelve childrenFebruary/March 1289aged 38–39?Sons of Günther V, divided their inheritance. Günther VII the Younger c.1250?Second son of Günther V the Elder and Matilda of Schwarzburg1273/5 – 10 June 1302County of Arnstadt(half 2)Adelaide of Schwarzburgc.1275?two children10 June 1302aged 51–52? Günther V c.1235First son of Günther IV and Sophia1275/8 1292/3County of SchwarzburgIrmgardnine childrenHelena of Saxe Lauenburg1283no children1292/3aged 56–57?Children of Günther IV, divided their inheritance. Henry IV c.1235Second son of Günther IV and Sophia1275/8 1287County of BlankenburgSofia Daniilovna of Galicia Volhynia1259two children1287aged 51–52? Gerhard II the Younger c.1270?First son of Wilbrand III and Adelaide of Adenoys1280 1345/6County of Hallermund(half 1)Elisabeth of Everstein Pollethirteen children1345/6aged 75–76?Children of Wilbrand III, ruled jointly. Wilbrand IV c.1270?Second son of Wilbrand III and Adelaide of Adenoys1280 1301Unmarriedc.1301aged 75–76? Henry VI c.1270First son of Henry IV and Sofia Daniilovna of Galicia Volhynia1287 – 11 November 1324County of BlankenburgChristina of Gleichen Tonna1268seven childrenOda of Henneberg Hartenbergc.1310/20?no children11 November 1324aged 53–54Sons of Henry IV, divided their inheritance. Günther VII c.1290Second son of Günther VI and Matilda of Käfernburg1320 1354/5County of Leutenberg(with Schwarzburg half 1)Helena of Holstein Pinnebergten childrenHelena of Nurembergbefore 27 January 1346one child1354/5aged 64–65 Brothers of Günther VIII, ruled jointly possibly until 1326, when they received Leutenberg from their kin Günther VII. A division of the inheritance is then made. Günther XElisabeth of Hohnsteinbefore 9 September 1331five children18 June 1349Frankfurt am Mainaged 45–46 Ludolf V c.1290?First son of Gerhard I1326 1358/61County of Hallermund(half 2)Unknownfour children1358/61aged 68–71? Children of Gerhard I, ruled jointly. Ludolf V was the only one of this branch who had descendants. Ludolf's children, (Henry II, Gerhard V and Ludolf VI) are only documented in 1366, but aren't known as counts. If they didn't succeed their father Ludolf V in the co rulership, the two halves of Hallermund were reunited after Henry I's abdication in 1384. Gerhard III c.1290?Second son of Gerhard I1326 c.1340Unmarriedc.1340?aged 49–50? Henry I c.1315?First son of Gerhard I and Gerburg of Homburg1326 c.1384c.1400aged 84–85? Otto I c.1315?Second son of Gerhard I and Gerburg of Homburg1326 13611361aged 45–46 Günther XI the Elder c.1300?Son of Günther VIII and Irmgard of Schwarzburg1332/3 1371County of KäfernburgLoretta of Eppsteinbefore 9 November 1341seven childrenIrmgard of Weimar Orlamünde1364no children1371aged 70–71?Cousins, ruled jointly. Günther XII the Younger c.1300?Son of Günther IX and Matilda of Regenstein1332/3 1341Agnesno children1341aged 40–41? Henry IX 1325First son of Henry VII and Elisabeth of Weimar Orlamünde1338 1372/3County of BlankenburgAgnes of Hohnstein Sondershausen24 February 1338eight children1372/3aged 47–48 Sons of Henry VII, divided their inheritance. Günther XI 9 September 1331Second son of Henry VII and Elisabeth of Weimar Orlamünde1338 – 6 June 1368County of SondershausenElisabeth of Hohnstein Sondershausenbefore 11 June 1347three children6 June 1368aged 36 Wilbrand V c.1320?First son of Gerhard II and Elisabeth of Everstein Pollec.1340 1375County of Hallermund(half 1 until 1384;both halves since 1384)Unmarried 1377aged 56–57? Children of Gerhard II, ruled jointly. In 1384, the county of Hallermund was reunited. Wilbrand possibly abdicated to become Archdeacon at Elze. Otto II c.1320?Second son of Gerhard II and Elisabeth of Everstein Polle1345/6 1392Adelaide of the Mark15 March 1332three children1392aged 71–72? Gerhard IV c.1320?Third son of Gerhard II and Elisabeth of Everstein Pollec.1345 c.1380Unmarriedc.1380aged 59–60? Regency of Elisabeth of Hohnstein (1349 1353) After his death Arnstadt reverted to Blankenburg. Henry X 1339Son of Günther IX and Elisabeth of Hohnstein18 June 1349 – November 1357County of ArnstadtUnmarriedNovember 1357aged 17–18 In 1357, Arnstadt rejoined Blankenburg Günther XII 1322First son of Henry VIII and Helena of Holstein Pinneberg1354/55 – 4 July 1382County of Schwarzburg(half 1)Magdalena Reuss of Plauenone childGertrude of Anhalt Bernburgbefore 12 August 1371two children4 July 1382aged 59–60 Sons of Henry VIII, divided their inheritance Henry XI c.1340?First son of Henry VIII and Helena of Nuremberg1354/55 1402County of LeutenbergAnna Reuss of Plauen1373one child1402aged 61–62? Günther XIII c.1320?First son of Günther X and Richeza of Schlüsselberg1358 1362County of WachsenburgAdelaide of Hohenlohe Uffenheim1357two children1362aged 41–42? Children of Günther X, Günther XIII and John II divided their inheritance. Some of John II's children didn't survive him, but as they are counted as rulers, it is possible that they co ruled with him in his part of the inheritance. John II 1327Second son of Günther X and Richeza of Schlüsselberg1358 1407County of Schwarzburg(half 2)Richeza of Henneberg Hartenbergbefore 16 July 1358seven childrenSophia of Schwarzburg Blankenburgno childrenFebruary/May 1407aged 79–80 Günther XVII c.1340First son of John II and Richeza of Henneberg Hartenberg1373 1395/6Judith of Schwarzburg Blankenburg1375four children1395/6aged 54–56 Henry XV c.1340Second son of John II and Richeza of Henneberg Hartenberg1373 1395 Unmarried1395aged 54–55 Balthasar I c.1340Fourth son of John II and Richeza of Henneberg Hartenberg1373 13961396aged 55–56 Günther XV 7 August 1507SondershausenSon of Henry XXII and Anna of Nassau Idstein4 August 1526 – 10 January 1537County of SondershausenMargaret of Schönberg4/17 March 1531Dresdenno children10 January 1537Frankenhausenaged 29In 1537 Sondershausen was annexed to Arnstadt Henry XXIII The Reformer 23 March 1499Son of Günther XXII and Amalia of Mansfeld8 August 1531 – 12 July 1538County of BlankenburgCatharina of Henneberg Schleusingen, the Heroic14 November 1524six children12 July 1538aged 39 Son of Günther XXII. Left no male descendants, and his possessions were inherited by Arnstadt. In 1538 Blankenburg was annexed to Arnstadt Regency of Margaret Reuss of Weida (1555 1559)His childless death allowed the Arnstadt branch to reunify the remnants of the old county of Schwarzburg. Philip I 1540Son of John Henry and Margaret Reuss of Weida14 March 1555 – 8 October 1564County of LeutenbergCatharina of Brunswick Grubenhagen4 December 1559Saalfeldno children8 October 1564Leipzigaged 23–24In 1564 Leutenberg was annexed to Arnstadt Günther XXIV the Bellicose 25 September 1529SondershausenFirst son of Günther XXIII and Elisabeth of Isenburg Ronneburg10 November 1552 – 1564County of ArnstadtCatherine of Nassau Dillenburg17 November 1560Arnstadtthree children23 May 1583Antwerpaged 53 Children of Günther XXIII. Günther XXIV inherited alone his father's possessions centered at Arnstadt. In 1564 briefly reunited Schwarzburg, and seven years later redivided it between himself and his brothers. As Gunther himself left no descendants, his domains were absorbed by Sondershausen. The same happened to William, who inherited Frankenhausen and also left no children. Frankenhausen was absorbed by Rudolstadt8 October 1564 – 1571County of Schwarzburg1571 – 23 May 1583County of ArnstadtArnstadt was annexed to Sonderhausen John Günther I 20 December 1532SondershausenSecond son of Günther XXIII and Elisabeth of Isenburg Ronneburg1571 – 28 October 1586County of SondershausenAnna of Oldenburg16 February 1566Sondershausentwelve children28 October 1586Arnstadtaged 53 William 4 October 1534SondershausenThird son of Günther XXIII and Elisabeth of Isenburg Ronneburg1571 – 30 September 1598County of FrankenhausenElisabeth of Schlick6 April 1567Frankenhausenno childrenClara of Brunswick Lüneburg7 March 1593Frankenhausenno children30 September 1598Straussbergaged 63Frankenhausen was annexed to Rudolstadt Albert III 16 January 1537SondershausenSecond son of Günther XXIII and Elisabeth of Isenburg Ronneburg1571 – 10 April 1605County of RudolstadtJuliana of Nassau Siegen14 June 1575Rudolstadtten childrenAlbertine Elisabeth of Leiningen Westerburg2 March 1591 Rudolstadtno children10 April 1605Rudolstadtaged 68 Günther XXV 7 September 1570SondershausenFirst son of John Günther I and Anna of Oldenburg28 October 1586 – 7 January 1643County of SondershausenUnmarried7 January 1643Sondershausenaged 72 Sons of John Günther I, ruled jointly. Anton Henry 7 October 1571SondershausenSecond son of John Günther I and Anna of Oldenburg28 October 1586 – 10 August 163810 August 1638Sondershausenaged 66 John Günther II 3 May 1577SondershausenThird son of John Günther I and Anna of Oldenburg28 October 1586 – 16 December 163116 December 1631Sondershausenaged 54 Christian Günther I 11 May 1578SondershausenFourth son of John Günther I and Anna of Oldenburg28 October 1586 – 25 November 1642Anna Sibylle of Schwarzburg Rudolstadt15 November 1612Sondershausennine children25 November 1642Arnstadtaged 64 Charles Günther 6 November 1576RudolstadtFirst son of Albert III and Juliana of Nassau Siegen10 April 1605 – 24 September 1630County of RudolstadtAnna Sophie of Anhalt13 June 1611Rudolstadtno children24 September 1630Kranichfeldaged 53 Sons of Albert III, ruled jointly. Louis Günther I 27 June 1581RudolstadtSecond son of Albert III and Juliana of Nassau Siegen10 April 1605 – 4 November 1646Emilie of Oldenburg Delmenhorst4 February 1638Rudolstadtfive children4 November 1646Rudolstadtaged 65 Albert Günther 8 August 1582RudolstadtThird son of Albert III and Juliana of Nassau Siegen10 April 1605 – 20 January 1634Unmarried20 January 1634Erfurtaged 52 Christian Günther II the Pious 1 April 1616EbelebenSecond son of Christian Günther I and Anna Sibylle of Schwarzburg Rudolstadt7 January 1643 – 10 September 1666County of ArnstadtSophia Dorothea of Mörsperg Beffort1645Arnstadtsix children10 September 1666Arnstadtaged 50 Children of Christian Günther I, divided their inheritance. Ebeleben returned to Sondershausen after Louis Gunther's death. Anton Günther I 9 January 1620EbelebenThird son of Christian Günther I and Anna Sibylle of Schwarzburg Rudolstadt7 January 1643 – 19 August 1666County of SondershausenMaria Magdalene of Palatinate Birkenfeld29 October 1644Sondershausenten children19 August 1666Ebelebenaged 46 Louis Günther II 2 March 1621EbelebenFourth son of Christian Günther I and Anna Sibylle of Schwarzburg Rudolstadt7 January 1643 – 20 July 1681County of Sondershausen(at Ebeleben)Concordia of Sayn Wittgenstein30 March 1669Ebelebentwo children20 July 1681Arnstadtaged 60In 1681 Ebeleben was annexed again to Sondershausen Regency of Emilie of Oldenburg Delmenhorst (1646 1662)He was elevated twice to an Imperial Prince, but only accepted the second proposal, at the end of his reign (1710). The County evolved into a Principality. Albert Anton 14 November 1641RudolstadtSon of Louis Günther I and Emilie of Oldenburg Delmenhorst4 November 1646 – 15 December 1710County of Rudolstadt(until 1710)Principality of Rudolstadt(from 1710)Emilie Juliane of Barby Mühlingen7 July 1665Rudolstadttwo children15 December 1710Rudolstadtaged 69 Regency of Sophia Dorothea of Mörsperg Beffort (1666 1668)Died without descendants. The county passed to his cousin, Anton Günther II. John Günther III 30 June 1654Son of Christian Günther II and Sophia Dorothea of Mörsperg Beffort10 September 1666 – 29 August 1669County of ArnstadtUnmarried29 August 1669aged 15 Christian William 6 January 1647SondershausenFirst son of Anton Günther I and Maria Magdalene of Palatinate Birkenfeld19 August 1666 – 10 May 1721County of Sondershausen(until 1697)Principality of Sondershausen(from 1697)Antonia Sybilla of Barby Mühlingen22 August 1673Sondershausenseven childrenWilhelmine Christiane of Saxe Weimar1684Sondershauseneight children10 May 1721Sondershausenaged 74 Inherited Sondershausen from his father, in 1681 Eberleben from his uncle Louis Günther II, and in 1716, Arnstadt from his brother. In 1697 he was raised to Imperial Prince. Anton Günther II 10 October 1653SondershausenSecond son of Anton Günther I and Maria Magdalene of Palatinate Birkenfeld29 August 1669 – 20 December 1716County of Arnstadt(until 1697)Principality of Arnstadt(from 1697)Augusta Dorothea of Brunswick Wolfenbüttel7 August 1684Wolfenbüttelno children20 December 1716Arnstadtaged 63 Inherited Arnstadt from his cousin. In 1697 he was raised to Imperial Prince. However, left no descendants. The Principality returned to SondershausenIn 1716 Arnstadt was annexed again to Sondershausen Louis Frederick I 25 October 1667RudolstadtSon of Albert Anton and Emilie Juliane of Barby Mühlingen15 December 1710 – 24 June 1718Principality of RudolstadtAnna Sophie of Saxe Gotha Altenburg15 October 1691Gothathirteen children24 June 1718Rudolstadtaged 50 Frederick Anton 14 October 1692RudolstadtFirst son of Louis Frederick I and Anna Sophie of Saxe Gotha Altenburg24 June 1718 – 1 September 1744Principality of RudolstadtSophia Wilhelmina of Saxe Coburg Saalfeld8 February 1720Saalfeldthree childrenSophia Christina of East Frisia6 January 1729Rudolstadtno children1 September 1744Rudolstadtaged 51 Günther XXVI 13 August 1678AulebenThird son of Christian William and Antonia Sybilla of Barby Mühlingen10 May 1721 – 28 November 1740Principality of SondershausenElisabeth Albertine of Anhalt Bernburg2 October 1712Sondershausenno children28 November 1740Sondershausenaged 62 Left no descendants. The Principality passed to his half brother, Henry. Henry XXV the Diamond Prince 8 November 1689SondershausenFirst son of Christian William and Wilhelmine Christiane of Saxe Weimar28 November 1740 – 6 November 1758Principality of SondershausenUnmarried6 November 1758Frankfurt am Mainaged 68 Left no descendants. The Principality passed to his nephew, Christian Günther III, son of his brother August. John Frederick 8 January 1721RudolstadtSon of Frederick Anton and Sophia Wilhelmina of Saxe Coburg Saalfeld1 September 1744 – 10 July 1767Principality of RudolstadtBernardina Christina Sophia of Saxe Weimar Eisenach19 November 1744Eisenachsix children10 July 1767Rudolstadtaged 46 Left no male descendants. The principality passed to his uncle. Christian Günther III 24 June 1736EbelebenSon of August of Schwarzburg Sondershausen and Charlotte Sophie of Anhalt Bernburg6 November 1758 – 14 October 1794Principality of SondershausenCharlotte Wilhelmine of Anhalt Bernburg4 February 1760Sondershausensix children14 October 1794Sondershausenaged 58 Nephew of Günther XXVI and Henry XXV. Louis Günther II 22 October 1708RudolstadtFourth son of Louis Frederick I and Anna Sophie of Saxe Gotha Altenburg10 July 1767 – 29 August 1790Principality of RudolstadtSophie Henrietta Reuss of Greiz22 October 1733Greizfour children29 August 1790Rudolstadtaged 81 Succeeded his nephew. Frederick Charles 7 June 1736RudolstadtSon of Louis Günther II and Sophie Henrietta Reuss of Greiz29 August 1790 – 13 April 1793Principality of RudolstadtFrederica Sophie Auguste of Schwarzburg Rudolstadt21 October 1763Rudolstadtsix childrenAuguste Louise Frederica of Saxe Gotha Altenburg28 November 1780Rudolstadtno children13 April 1793Rudolstadtaged 56 Louis Frederick II 9 August 1767RudolstadtSon of Frederick Charles and Frederica Sophie Auguste of Schwarzburg Rudolstadt13 April 1793 – 28 April 1807Principality of RudolstadtCaroline of Hesse Homburg21 June 1791Homburgseven children28 April 1807Rudolstadtaged 39 Günther Frederick Charles I 5 December 1760SondershausenSon of Christian Günther III and Charlotte Wilhelmine of Anhalt Bernburg14 October 1794 – 19 August 1835Principality of SondershausenCaroline of Schwarzburg Rudolstadt23 June 1799Sondershausentwo children22 April 1837Sondershausenaged 76 Abdicated. Regency of Caroline of Hesse Homburg (1807 1814) He left no surviving legitimate children. The principality passed to his brother Albert. Frederick Günther 6 November 1793RudolstadtFirst son of Louis Frederick II and Caroline of Hesse Homburg28 April 1807 – 28 June 1867Principality of RudolstadtAuguste of Anhalt Dessau15 April 1816Dessauthree childrenHelene of Reina(morganatic)7 August 1855Dresdentwo childrenMaria Schultze(morganatic)24 September 1861Rudolstadtno children28 June 1867Rudolstadtaged 73 Günther Frederick Charles II 24 September 1801SondershausenSon of Günther Frederick Charles I and Caroline of Schwarzburg Rudolstadt19 August 1835 – 17 July 1880Principality of SondershausenIrene Maria of Schwarzburg Rudolstadt12 March 1827Sondershausenfour childrenMatilda of Hohenlohe Öhringen29 May 1835Öhringentwo children15 September 1889Sondershausenaged 87 Abdicated due to an eye condition. Albert IV 30 April 1798RudolstadtSecond son of Louis Frederick II and Caroline of Hesse Homburg28 June 1867 – 26 November 1869Principality of RudolstadtAugusta Louise of Solms Braunfels26 July 1827Rudolstadtfour children26 November 1869Rudolstadtaged 71 George Albert 23 November 1838RudolstadtSon of Albert IV and Augusta Louise of Solms Braunfels28 November 1869 – 19 January 1890Principality of RudolstadtUnmarried19 January 1890Rudolstadtaged 51 Left no descendants. He was succeeded by his cousin, George Victor. Charles Günther 7 August 1830ArnstadtSon of Günther Frederick Charles II and Irene Maria of Schwarzburg Rudolstadt17 July 1880 – 28 March 1909Principality of SondershausenMarie Gasparine of Saxe Altenburg12 June 1869Altenburgno children28 March 1909Dresdenaged 78 Left no descendants. After his death Sondershausen was annexed to Rudolstadt. In 1909 Sondershausen was annexed to Rudolstadt Günther Victor 21 August 1852RudolstadtSon of Adolph of Schwarzburg Rudolstadt and Mathilde of Schönburg Waldenburg19 January 1890 – 28 March 1909Principality of RudolstadtAnna Louise of Schönburg Waldenburg9 December 1891Rudolstadtno children16 April 1925Sondershausenaged 72 Great grandson of Frederick Charles. In 1909 reunited the principalities of Rudolstadt and Sonderhausen. In 1918, following the German revolution, abdicated and became Titular Prince.28 March 1909 – 22 November 1918Principality of Schwarzburg