William of Egremont was the son of William FitzDuncan and Alice de Romilly. His date of birth is not known but it is known that he drowned around 1155. He married Gruaich of Moray and they had two children.
Family tree for William, daughter of William FitzDuncan showing:
parents
siblings 
partner 
child 
Published May 2, 2020 @ 3:56 pm – Updated –
Harvard Reference for this page:
Heather Y Wheeler. (2020). William of Egremont d c1155. Available: https://www.treesofblue.com/william-of-egremont-d-c1155. Last accessed November 18th, 2023