HENRI [III] d'Avaugour (-11 Feb or Nov 1301, bur Dinan). "Henricus de Avaugor dominus Goloye, miles" donated property to the priory of Saint-Magloire de Léhon on becoming a monk, with the consent of "nepotis nostri Henrici de Avaugor domini Meduane, miles" and for the souls of "Juhelli, Gaufridi et Ricardi maritorum meorum", by charter dated Mar 1278[1095]. A charter dated 1282 records an agreement between “Henricum d´Avaugour militem dominum de Gouelou et Meduanæ” and “Gaufridum d´Avaugour patruum suum” concerning the succession of “Henrici d´Avaugour quondam militis patris dicti Gaufridi et avi dicti Henrici”[1096]. "Henri d'Avaugour Seigneur de Mayenne" issued a charter in the bishopric of Mans dated 12 Feb 1285[1097]. m (before 27 Apr 1283) MARIE de Beaumont-Brienne, daughter of LOUIS de Brienne Vicomte de Beaumont & his wife Agnes de Beaumont (-18 Mar 1328, bur Guingamp). The Chronicon Britannicum records the death “die veneris ante festum B. Gregorii” 1328 of “domina Maria de Belomonte domina de Avalgoria...fuerat uxor domini Henrici de Avaugour” and her burial “in...convento fratrum minorum de Guengampo”[1098]. The necrology of Notre-Dame-de-Beauport records the death "XV Kal Apr" in 1328 of "Marie de Baumont uxoris domini Henrici d´Avalgor filii Alani fundatoris nostri"[1099]. Henri [III] & his wife had six children