On the occasion of his second wedding, William Talvas invited William fitz Giroie to attend. Suspecting nothing fitz Giroie while a guest at the festivities was suddenly seized by Talvas' men and imprisoned, then according to Orderic horribly mutilated and blinded before being released. Somehow William Giroie survived his torture and mutilation and retired to Bec Abbey to live out the remainder of his life as a monk. To avenge this atrocity the sons and kinsmen of William fitz Giroie sacked and destroyed the lands of William Talvas who would not face them in the field. Finally, Talvas' son Arnulf rebelled and exiled his father, now reviled by everyone. He wandered until he was taken in by the de Montgomery family whose son Roger agreed to marry his daughter Mabel in return for the lands William lost. It seems certain that after the death of Arnulf the following year, that William Talvas recovered his lands. William confirmed a gift to St. Aubin of Angers made by his brother Yves circa 1060-2 and after that nothing more is heard of him.