HUMBERT [IV] de Beaujeu, son of HUMBERT [III] Seigneur de Beaujeu & his wife Alix [Elise] de Savoie (-[1189]). A manuscript genealogy of the Cabinet de d'Hozier refers to "une charte de 1194" which names "Hug, Guichard, Humbert et Guy" as the children of "Humbert et Alexie sa femme"[2173]. "Humberto…de Bellojoco et filiis eiusdem Gui et Humberto…" witnessed the charter dated 16 Jul 1158 under which "Guigo comes Forensis" granted safe passage to the Knights Hospitallers[2174]. "Umbertum de Bello Joco patrem et Umbertum filium suum" made a peace agreement by charter dated 30 Mar 1184[2175].He died on the Third Crusade.
m ([1160]) as her second husband, AGNES de Thiern Dame de Montpensier-en-Auvergne, widow of RAYMOND de Bourgogne Comte de Grignon [Capet], daughter of GUY de Thiern Seigneur de Montpensier & his wife ---. The primary source which confirms her parentage has not yet been identified. Her two marriages are deduced from the Chronicle of Alberic de Trois-Fontaines which names "Agnes de Montepancerii in Alvernia" as the mother of "domni de Belloioco Wichardi" (her son by her second marriage) and specifies that she was also mother of "Mathilde comitisse Nivernensis"[2176].
Humbert [IV] & his wife had three children