GUILLAUME [I] de Montfort

Parents not known

From Medlands

http://fmg.ac/Projects/MedLands/BRITTANY.htm#GuillaumeIMontfortdied...

(-1157).  Seigneur de Montfort.  A Chronicle in the collection of manuscripts of the church of Nantes records the death in 1157 of "Guillelmus Montifortensis dominus" and the succession of "Rodulfus filius eius"[1224].  m AMICIE de Porhoët, daughter of GEOFFROY Vicomte de Porhoët & his wife Hadvise ---.  Guillaume & his wife had two children:  

a) RAOUL (-1162). A Chronicle in the collection of manuscripts of the church of Nantes records the death in 1157 of "Guillelmus Montifortensis dominus" and the succession of "Rodulfus filius eius"[1225]. Seigneur de Montfort. A Chronicle in the collection of manuscripts of the church of Nantes records the death in 1162 of "Radulfus de Montfort" and the succession of "Gaufridus frater eius"[1226].

b) GEOFFROY . A Chronicle in the collection of manuscripts of the church of Nantes records the death in 1162 of "Radulfus de Montfort" and the succession of "Gaufridus frater eius"[1227]. Seigneur de Montfort. "Eudo Britannie comes" donated property to Saint-Martin de Josselin, with the consent of "fratrum meorum…Joscii vicecomitis et Alani Ceoche", witnessed by "Roaldo Dongie vicecomitis, Henrico de Arundelle, ---dio de Leon, Gaufredo de Monteforti", with the consent of "Alano de Rohan cognato meo", by charter dated 1164, witnessed by "…Stephanus frater meus…Guihomarus alterius filius de Leon…"[1228]. m ---. The name of Geoffroy's wife is not known. Geoffroy & his wife had one child:

i) GUILLAUME [II] de Montfort . Seigneur de Montfort. m ---. The name of Guillaume's wife is not known. Guillaume [II] & his wife had one child:

(a) MATHILDE de Montfort . "Matill domina Montis-Fortis et de Noial" donated property to the abbey of Bon-Repos, with the consent of "domini Jocelini de Rohan mariti mei", by charter dated 1235[1229]. m JOSCELIN de Rohan, son of ALAIN [III] Vicomte de Rohan & his wife Constance de Penthièvre (-after 17 Oct 1251).