Bernolt was the son of Miklós Szilágyi but his mother is unknown. The date and place of his birth have not been found.
His wife was Katalin Bellyéni. They were married, but the date and place have not been found. Their six known children were Osvát (?-<1452), Orsolya (?-?), Mihály (?-1460/61), Erzsébet (c1410-1483), László (?-1456) and Zsófia (?-1474).