Background
Simon was the third son of the Breton knight, Alan fitz Flaad, feudal lord of Oswestry, by his spouse Aveline, daughter of Ernoulf de Hesdin.
Simon was the third son of the Breton knight, Alan fitz Flaad, feudal lord of Oswestry, by his spouse Aveline, daughter of Ernoulf de Hesdin.
He had a son Robert, who styled himself Boyt.