When King Stephen I died on August 15, 1038, Peter Orseolo ascended to the throne, but he had to struggle with King Stephen's brother-in-law, Samuel Aba (1041–1044).
La moartea regelui Ștefan I (15 august 1038), Peter Orseolo a fost întronizat, dar a avut de luptat cu cumnatul regelui Ștefan, Samuel Aba (1041–1044).