Medieval legends suggest that Ismeria, a descendent of the tribe of King David, was the grandmother of the Virgin Mary. The legend of St. Ismeria, presented in the current Journal of Medieval History, sheds light on both the Biblical Virgin Mary's family and also on religious and cultural values of 14th-century Florence. "I don't think any other woman is mentioned" as Mary's grandmother in the Bible, Catherine Lawless, author of the paper, told Discovery News. "Mary's patrilineal lineage is the only one given." "Mary herself is mentioned very little in the Bible," added Lawless, a lecturer in history at the University of Limerick. "The huge Marian cult that has evolved over centuries has very few scriptural sources."