After the death of Guihomar IV, who had submitted to the ducal power not long before, Henry II confiscated the Viscount's estates.
Guihomar V received the castellanies of Lesneven, Brest, Saint-Renan and Le Conquet as well as the title of Viscount of Léon.
Harvey I received the estates of Landerneau and Daoudour, as well as the lordship of Coat-Méal.
The Lords of Léon settle in the castle of La Roche-Maurice.
[1] In 1196, after Duchess Constance was imprisoned by her husband Ranulf of Chester, Guihomar, his brother Harvey and several other Breton lords rebelled and took Constance's son Arthur away from his uncle Richard.