Henry de La Trémoille

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Henry de La Trémoille (died 1674) was the 3rd Duke of Thouars, 2nd Duke of La Tremoille, and Prince of Talmond and Taranto. He was a great-great-great-grandson of the medieval general Louis de La Trémoille.

He was the heir-general of Frederick IV of Naples (Federigo di Aragona) and his first wife Anne of Savoy (the heiress-general of Cyprus dynasty), and as such succeeded to the Cypriot claims to the title of King of Jerusalem when his father, the 1st Duke of La Tremoille, died. He was the heir-general of Anne of Savoy, whose daughter Charlotte became in 1499 the de jure heiress of the claim of the Kings of Cyprus to the throne of Jerusalem.

Since Federigo di Aragona (Frederick IV) was the second son of Isabella of Taranto and Ferrante I of Naples, he also succeeded to the Brienne claims to Kingdom of Jerusalem of his distant cousin John Casimir of Poland at the latter's death 1672.

At that point in 1672, the successions of Brienne and of Cyprus to the de jure crown of Jerusalem were united. At this succession, the decision of 1264 by the Haute Cour of Jerusalem to prefer the junior heir, Hugh of Antioch of Cyprus, over the senior heir, Hugh of Brienne, in regard to Regency of Jerusalem, was made insignificant and moot, as these two claims merged in one person and in one line.