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Ladislaus III succeeded Imre of Hungary, his brother Andrew became his Regent. Andrew soon took over all regal authority while Ladislaus and Constance were little more than his prisoners. Constance managed to escape to Vienna with Ladislaus.

Constance would remarry to the 18 year old Frederick I of Sicily so that she and Ladislaus III would have some support against Andrew of Hungary, she would remain with Frederick I of Sicily with her son, finding a way to restore the rule of her son in Hungary, Constance of Aragon would give her second husband Frederick I of Sicily two sons and one daughter namely, Henry b. 1205 and Frederick b. 1214 and a daughter named Beatrice b. 1212.

She would be able to restore her son, Ladislaus III on the throne on 1214 when her son nearly reached his majority as Frederick II would bribe Henry of Brunswick by making him marry his sister and removing his uncle, Andrew from power in Hungary.

Unfortunately for Queen Constance she would die on 1216 and her husband would pick a second wife in the person of Margaret of Flanders, the eventual heiress to the Counties of Flanders and Hainault.