| Stephen | |
|---|---|
| Duke of Slavonia Podestà of Ravenna | |
| Born | 1236 Wehrda, Duchy of Thuringia |
| Died | c. 10 April 1271 (aged 34–35) Venice, Republic of Venice |
| Burial | |
| Spouse | 1, Isabella Traversari 2, Tomasina Morosini |
| Issue | (1) Stephen (2) Andrew III of Hungary two illegitimate sons (Aimericus and Tralusius) |
| Dynasty | Árpád dynasty |
| Father | Andrew II of Hungary |
| Mother | Beatrice d'Este |
Stephen the Posthumous (Hungarian: Utószülött István; 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 Traversari, 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.