Margaret of Hungary was a 13th-century princess and Dominican nun who lived a life of intense religious devotion. Born in Klis Fortress to King Béla IV and Maria Laskarina, she was dedicated to God following the Mongol invasion of her father's lands. She resided primarily at a monastery on an island near Buda, which was later named in her honor. Despite her royal status, she rejected political marriage proposals to remain a consecrated virgin and served as an abbess within her order.