|Intro||Hungarian prince, duke of slavonia|
|A.K.A.||Stephen the Venetian|
Stephen the Posthumous (1236–1271) was the posthumous son of King Andrew II of Hungary by his third wife, Beatrice d'Este. He was regarded as bastard son of infidelity by his much older half-brothers, including King Béla IV of Hungary, and was not allowed to receive ducal revenues from Hungary to which he would have been entitled as son of a Hungarian king.
He was first married to a widow, Isabella Traversani, by whom he had a short-lived son named Stephen. His second wife was Tomasina Morosini. Their son would later become King Andrew III of Hungary.