William (I) de Mohun Lord of Dunster( - ca 1129) Walter de Gant( - 1139)
Alice( - aft 1090) Maud of Brittany
William (II) de Mohun Earl of Somerset Agnes de Gant
b.  
d. bef 1155
Cr earl in 1141 by Empress Maud.
b.  
d.  
 
Children