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Male Istvan Click to view Istvan in the family tree

Istvan was born in 1236 in Born posthumously.  Istvan's father was Andreas II Von Ungarn and his mother was Beatrice de Este.  His paternal grandparents were Bela III Von Ungarn and Agnes De Chatillon-sur-Loing. He had three half-brothers and three half-sisters, named Bela IV, Kalman, Andras, Maria of, Elizabeth The Saint of and Jolanthe.  He died at the age of 35 in 1271.

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