Guilliers, Morbihan, France
- References (4)
- Individual: Viscount Guethenoc de Chateautro-en-Porhoet (b. 0995/1008 )
- 0990 Individual: Alarun de Cornouaille (b. 0990 )
- 1020 Individual: Seigneur Tihern de Châteaubriant I of Biré (b. 1020 )
- 1135 Marriage / Union: Vicomte Geoffrey la Zouche of Porhoet & Hawise Fergaunt of Brittany (m. ~1135 )