Stephen the Posthumous, born in the year one thousand two hundred thirty-six, was the posthumous son of King Andrew II of Hungary and his third wife, Beatrice d'Este. His birth came at a time when the royal lineage was already established, and as a result, he faced significant challenges in gaining recognition and legitimacy within the royal family.
Regarded as a bastard by his older half-brothers, including King Béla IV of Hungary, Stephen was denied access to the ducal revenues that would typically be afforded to a son of a Hungarian king. This exclusion marked his early life and shaped his identity as a sovereign and politician, navigating the complexities of royal expectations and familial relationships.
Stephen's personal life included two marriages. His first wife, Isabella Traversari, was a widow, and together they had a son named Stephen, who unfortunately did not survive long. His second marriage to Tomasina Morosini proved more fruitful, as they had a son who would later ascend to the throne as King Andrew III of Hungary, thus continuing the royal lineage.