After his father's death, Harvey became Lord of Léon. His fief was the castle of La Roche-Maurice.
Harvey married Anne of Kemenet, heiress of part of the Kemenet-Héboé, that is to say two thirds of the old castle of Hennebont, the parishes of Inzinzac and Penquesten, most of Saint-Caradec and Caudan, half of Groix, one third of Plouay, Tréfaven en Ploemeur and several enclaves scattered in Arzano, Gestel and Lesbin, Quéven and Lanvaudan.
Herve II and Anne had a son:
After Anne's death, he married a daughter of Morvan, Viscount of Le Faou.
According to the necrology of the Abbaye Saint-Guénolé de Landévennec, Herve II died on 23 November in an unspecified year around 1218, while he was on his way back from the Fifth Crusade.[2]
.svg)