In response, his stepsons filed a lawsuit against him, who defended himself before the court that, during wedding, he was unaware of the fact that his wife was a goddaughter ("spiritualis filia") of his late father, Hahold II.
After hearing witnesses from both families, Bartholomew, Bishop of Veszprém officially broke the marriage and obliged Michael to pay 140 marks to his ex-wife and her sons in 1233.
[4] Alongside his cousin, Ban Buzád Hahót, he appeared as a witness in the so-called Kehida Diploma of 1232, where the royal servants of Zala County urged King Andrew II of Hungary to recognise their verdict as compulsory, because Atyusz, the father of Michael's future son-in-law, refused to give back the land of Wezmech to the Diocese of Veszprém.
[7] In this capacity, he took care of the minor children – Catherine, Elizabeth, Constance, Yolanda and Stephen – of the royal family until the king's court fled to Dalmatia following the Mongol invasion and the disastrous Battle of Mohi in April 1241.
Béla, who was grateful to Trogir, which provided shelter to the royal family during the Mongol invasion, granted it lands near Split, causing a lasting conflict between the two Dalmatian towns.
Michael participated in Béla's campaign in Dalmatia in 1244, and was a member of that Hungarian army, led by Slavonian Ban Denis Türje, which supported Trogir in the clashes against Split.