Henri de Komnenos-Palaiologos (5 October 1581 – 26 December 1651) became Prince of Arcadia while still in his mother's womb, because his father Henri I, Prince of Arcadia died prematurely, just four months before his birth. He was the Prince of Arcadia for around seventy years, his entire life. As a member of the reigning House of Komnenos-Palaiologos, he was a Sebastos, a Diadochian Prince du Sang, a prince of the blood