Through the legal doctrine of daughters' quarter, his wife was granted the estate Rahóca in Baranya County from her clan and handed over to Stephen as a dowry.
[8] A relative of his wife, Conrad Győr filed a lawsuit against his second cousins, the wives of Paul Geregye and Stephen Csák, disputing the legitimacy of their ownership over Ilsva and Rahóca in Baranya County, respectively.
In September 1258, Béla IV rejected Conrad's accusations citing the fact that the two ladies were granted the aforementioned possessions via daughters' quarter during their wedding approximately thirty years ago.
[3] In the spring of 1268, he Serbian king Stefan Uroš I invaded the Duchy of Macsó, the southern province of the Kingdom of Hungary, taking advantage of the internal conflict between Béla IV and Stephen.
Béla IV sent a royal army commanded by Stephen Csák, who marched into the south in order to liberate the province.
The fighting resulted the decisive victory of the Hungarians, King Stefan Uroš I was himself captured by Stephen Csák's army along with the Serbian standards.
[11] Stephen sent his familiaris Nicholas, son of Mark from Szepes County to inform the royal couple of the victory.
In case he was alive at the time, he most likely lost all political influence and retired to his estates in Southern Transdanubia after Stephen V ascended the Hungarian throne.