House of FaouViscounts of FaouAncient arms
House of FaouViscounts of FaouFrom the 13th century
House of Fou-GuéhenneucBarons of PirmilLords of Rustéphan, Noyen, Courcelle and La Roche-Guéhenneuc
House of Fou-KerdanielLords of Beauchesne, Bézidel and KerdanielCadets of Guéhenneuc
Jehan du FaouLord of Kerjestin and RustéphanProgenitor of Guéhenneuc and Kerdaniel braches