After his father's death (3 May 1270), Stephen inherited the whole Kingdom of Hungary.
In about 1253, he married Elizabeth (1240 – after 1290), daughter of a chieftain of the Cuman tribes, they settled in Hungary and had the following children:
Elizabeth (1255–1313/1326), wife firstly of Záviš of Falkenštejn and secondly of King Stefan Uroš II Milutin of Serbia
Catherine (1255/1257 – after 1314), wife of King Stefan Dragutin of Serbia
Maria (c. 1257 – 25 March 1325), wife of King Charles II of Naples
Anna (c. 1260 – c. 1281), wife of the Emperor Andronikos II Palaiologos
King Ladislaus IV (August 1262 – 10 July 1290)
Andrew, Duke of Slavonia (1268–1278)
After his father's death (3 May 1270), Stephen inherited the whole Kingdom of Hungary.
In about 1253, he married Elizabeth (1240 – after 1290), daughter of a chieftain of the Cuman tribes, they settled in Hungary and had the following children:
Elizabeth (1255–1313/1326), wife firstly of Záviš of Falkenštejn and secondly of King Stefan Uroš II Milutin of Serbia
Catherine (1255/1257 – after 1314), wife of King Stefan Dragutin of Serbia
Maria (c. 1257 – 25 March 1325), wife of King Charles II of Naples
Anna (c. 1260 – c. 1281), wife of the Emperor Andronikos II Palaiologos
King Ladislaus IV (August 1262 – 10 July 1290)
Andrew, Duke of Slavonia (1268–1278)