Geoffrey I, count of Penthièvre

(1040-1093) (1040–1093)

Parents

• Agnès de Cornouaille
• Odo, Count of Penthièvre

Children

• Eudes de Penthièvre, Comte de Porhoët

Siblings

• Brian of Brittany
• Alan Rufus
• Alan the Black
• Stephen, Count of Trégor
• Bardolph, Lord of Ravenswath
• Ribald FitzOdo de Penthièvre, 1st Lord Middleham and Spennithorne