Guillaume de Grandmesnil (de Grentmesnil), Heir of the honour of Grandmesnil - William flees the Siege of Antioch

From "Deeds of the Franks" Book 9, Chapter 22 & 23

"Meanwhile some were fighting outside the city, others inside on the fifth day of the week through the whole day all the way to nightfall. Among these was William de Grandmesnil, his brother Alberic (Aubrey), Guy Trousseau, and Lambert the Poor, these men were trembling with fear from the battle yesterday that lasted all the way til night. So they snuck out secretly by night over the wall and, fleeing on foot, headed for the sea and thus nothing remained on their hands and feet but the bones. Many men fled with them; I do not know who."