Хорватияның номиналды королі Томислав II

King of the Independent State of Croatia

Prince Aimone, 4th Duke of Aosta (Aimone Roberto Margherita Maria Giuseppe Torino; 9 March 1900 – 29 January 1948) was a prince of Italy's reigning House of Savoy and an officer of the Royal Italian Navy. The second son of Prince Emanuele Filiberto, Duke of Aosta, he was granted the title Duke of Spoleto on 22 September 1904. He inherited the title Duke of Aosta on 3 March 1942 following the death of his brother Prince Amedeo in a British prisoner of war camp in Nairobi. From 18 May 1941 to 31 July 1943, Aimone was designated king of the Independent State of Croatia (, NDH) though he never ruled there. He formally accepted the position and took the name Tomislav II, after the first Croatian king. Later, however, he refused to assume the kingship in protest of the Italian annexation of the Dalmatia region, and is therefore referred to in some sources as king designate. Regardless, many sources refer to him as King Tomislav II and the nominal head of the NDH during its first two years (1941–1943). After the dismissal of Mussolini on 25 July 1943, Aimone abdicated on 31 July as king on the orders of Victor Emmanuel III.

Prince Aimone Roberto Margherita Maria Giuseppe Torino of Savoy Aosta was born in Turin the second son of Prince Emanuele Filiberto, Duke of Aosta (eldest son of Prince Amedeo, 1st Duke of Aosta (and sometime "King Amadeo I of Spain") by his wife, née Vittoria dal Pozzo, Principessa della Cisterna) and Princess Hélène of Orléans (daughter of Philippe, comte de Paris, and Princess Marie Isabelle of Orléans). As his patrilinal great grandfather was King Victor Emmanuel II of Italy, he was a member of the House of Savoy. With his brother Amedeo, he was educated at St David's College, Reigate, Surrey, England, and Aimone later went to study at the naval academy in Livorno. On 1 April 1921, Prince Aimone became a member of the Italian Senate. Princes of the House of Savoy became members of the Senate at age 21, obtaining the right to vote at age 25. In 1929, twenty years after his uncle Prince Luigi Amedeo, Duke of the Abruzzi had attempted to climb K2 in Karakoram, Prince Aimone led an expedition to Karakorum. A member of the expedition was Ardito Desio. Due to the failure to climb K2 twenty years earlier, Prince Aimone's expedition concentrated solely on scientific work. He was afterwards awarded the 1932 Royal Geographical Society's Patron's Medal for his work.

After being romantically linked with Infanta Beatriz of Spain, the daughter of King Alfonso XIII, he married, on 1 July 1939 at the church of Santa Maria del Fiore, Florence, Princess Irene of Greece and Denmark, daughter of King Constantine I and Princess Sophie of Prussia. They had one son, Prince Amedeo, Duke of Aosta, born in 1943.

On 18 May 1941, in a ceremony at the Quirinal Palace, to which Ante Pavelić, the leader of the nazist Ustaše movement that had assumed power in Croatia in April 1941 after the invasion of Yugoslavia, led a delegation of Croats requesting that Italy's King Victor Emmanuel III name a member of the House of Savoy as king of Croatia. The Independent State of Croatia was a fascist puppet state that was partly under Italian and German control, covering most of present day states of Croatia and Bosnia and Herzegovina, but its leaders tried to assert their legitimacy by instating a monarchy that would resemble the medieval Croatian state. Aimone was then officially named king by his cousin Victor Emmanuel III. On assuming the Crown of Zvonimir he took the regnal name Tomislav II. Originally on learning that he had been named king of Croatia, he told close colleagues that he thought his nomination was a bad joke by his cousin King Victor Emmanuel III, though he accepted the crown out of a sense of duty. The Italian Foreign Minister and Benito Mussolini's son in law, and Count Ciano's informants said of Aimone "The Duke doesn't give a damn about Croatia and wants only money, money and more money." He was due to be crowned in Duvno (Tomislavgrad), in modern day Bosnia and Herzegovina, but he refused to go to there due to the "Dalmatian question" which arose due to Italy taking some of Dalmatia's coastal territory. Aimone felt that Dalmatia "was a land that could never be Italianized" and was an obstacle to Italo Croatian reconciliation. Other reasons why he never went to Croatia were because of an ongoing insurgency, and that his safety could not be guaranteed. Because of this he exercised what little power he had from Italy and Hungary,

After the fall of the Fascist regime in Italy, Aimone abdicated as king of Croatia on 31 July 1943 on the orders of Victor Emmanuel III. Prince Aimone succeeded to the title duke of Aosta on 3 March 1942, following the death of his elder brother Prince Amedeo, 3rd Duke of Aosta, in a British prisoner of war camp in Kenya. In the autumn of 1942, Aimone contacted Allied forces via his courier, the consul general Alessandro Marieni, about the possibility of a peace settlement between Italy and Allied forces. Secret talks would continue into 1943, motivated in part by the aim of preserving the royal dynasty of Savoy. During his naval career he reached the rank of Squadron Admiral.

In 1947 following the birth of the Italian Republic the previous year, Prince Aimone left Italy for South America. Just a year after his arrival, he suddenly died on 29 January 1948 in his temporary residence, a private suite at the Alvear Palace Hotel in the French Borough of Recoleta in Buenos Aires, while his entourage was arranging his permanent residency documents and the purchase of his new home in Argentina. The claim to the Aosta ducal title passed to his son Prince Amedeo.