Harvey V, Lord of Léon

After his father's death in c. 1290, Herve became Lord of Léon. His fief was the castle of La Roche-Maurice. He died in April 1304.

Herve V married Joan of Rohan.[1] They had:

• Herve VI,[1] who succeeded his father;
• William I, Lord of Hacqueville, who married Catherine,[1] daughter of Odo, Lord of La Roche-Bernard, in 1301;
• Amicia, who married Catherine's brother Bernard, Lord of La Roche-Bernard c. 1301[1]
• Isabella, who married William of Harcourt, Lord of Saussaye,[1] an estate located about thirty kilometers from Noyon-sur-Andelle, possession of the House of Léon;
• Guy, whose existence is disputed and who is said to be a Bishop of Léon and a defender of the town of Hennebont in 1342 during the War of the Breton Succession;
• Raoul, whose existence is also disputed and who is said to be the ancestor of the Languéouez family;
• Oliver, Lord of Caudan, whose existence is disputed and who was more probably a son of William of Léon and Catherine of La Roche-Bernard.

• Morvan, Frederic (2009). La Chevalerie bretonne et la formation de l'armee ducale, 1260-1341 (in French). Presses Universitaires de Rennes.
• Chaillou, Léa. The House of Léon: Genealogy and Origins. Foundations: The Journal of the Foundation for Medieval Genealogy, volume 11, 2019, pp. 19–48 ISSN 1479-5078
• Patrick Kernévez and Frédéric Morvan, Généalogie des Hervé de Léon (vers 1180-1363). Bulletin de la Société archéologique du Finistère, 2002, p 279-312.