Henry I of Trégor French aristocrat (1110–1183) Parents Stephen, Count of Trégor Children Alan of Goëlo Siblings Geoffrey II, Count of Penthièvre Alan of Penthièvre, 4rd Lord of the Honour of Richmond, 1st Earl of Richmond Tiphaine de Penthièvre Maud of Penthièvre Olive of Penthièvre Agnorie de Penthièvre