The following is from 'The Whole Truth about Fatima'. It might interest your friend to know this mohammedan aspect of that history.
“... if we can believe the words of an ancient ballad, Fatima owes its clearly Arabic name to an episode in the reconquest of Portugal which took place in this era. Fatima, the daughter of a powerful Moslem prince of Alcacer do Sal, was captured by a Crusader, Gonçalo Hermingues. When the Christian knight asked for her hand in marriage, she converted and was baptized under the name Oureana, from which the village of Ourem took its name. But the beautiful princess died young, and Don Gonçalo, in his distress, gave his life to God in the Cistercian abbey of Alcobaca. Not long after, the abbey founded a small priory in the neighboring mountains; Brother Gonçalo was sent there and took with him the remains of his dear Fatima. The place took and kept her name.”