Sophia was the elder of the two daughters of King Béla II of Hungary.
Background
She was engaged to Henry, a son of Conrad III of Germany. Sophia, as the first daughter of the royal couple, King Béla II and Helena of Rascia, was born around 1135. She first begins to appear in narrative texts in 1139, when her father betrothed her to Henry, the eldest son of Conrad III (r 1138–1152).
Career
She died as a nun in the Admont Abbey. However her engagement with the young Henry was broken. Her father, Béla the Blind died in 1141, and the relationship between his successor—Géza II of Hungary (r 1141–1162)— and Conrad III grew increasingly strained during the following years.
In this charged environment, the plans for a marriage between Sophia and Henry were abandoned.
However, Sophia was still in the German kingdom, where she had been living for the past several years. Within a year she become a nun at the convent of Admont (today in Austria).
According to Herbord of Michelsberg"s letter written in 1159, Sophia was already residing in the double monastery at Admont when her betrothal ended. Conrad III had sent her there immediately after she left Hungary, because the German king wanted her to be raised within the abbey until Sophia and Henry were old enough to wed.
However Sophia did not want to leave, insisting instead that she wished to remain in the monastery as a nun.
Later, though, he decided to send a diplomatic mission to negotiate her return. The abbot of Admont gave Sophia the choice of staying or leaving. Once more, she affirmed her desire to become a nun, as a result Géza II finally permitted her to stay at Admont.