Passage: At Easter 1080, father and son were reunited by the efforts of Queen Matilda, and a truce lasted until she died in 1083. Robert seems to have left court soon after the death of his mother and spent several years travelling throughout France, Germany and Flanders. He visited Italy seeking the hand of the great heiress Matilda of Tuscany (b. 1046) but was unsuccessful. During this period as a wandering knight Robert sired several illegitimate children. His bastard son Richard seems to have spent much of his life at the royal court of his uncle William Rufus. This Richard was killed in a hunting accident in the New Forest in 1099 as was his uncle, King William Rufus, the next year. An illegitimate daughter was later married to Helias of Saint-Saens.

Question: Who was the daughter married to?
Helias of Saint-Saens