GUY [IV] de Laval (-23 Dec [1180/85], bur Abbaye de Clermont). A charter dated 1142 confirms the foundation of the priory of Plessis-Milcent by "Guido de Lavalle" and completed after his death by "filius eius Guido", with the consent of "matre sua Ama et Gervasio avunculo suo"[480]. He succeeded his father as Sire de Laval. A charter issued by the monks of Marmoutier dated 1150 records the excommunication of Guy de Laval[481]. He called himself "Guido quintus" in a charter dated to [1150] under which he donated profits from a fair to the Knights Hospitallers of Jerusalem[482]. "Wido dominus Lavallis" confirmed a donation by "Guido antecessor meus" to the priory of Gennes by charter dated to [1150], witnessed by "domina Lavallis, Emma, uxor eiusdem Guidonis…"[483]. "Guy de Laval" founded the abbey of Clermont, with the consent of "Emma sa mère, d´Hamon son frère, alors malade", by charter dated 1152[484]. "Guido Lavallensis dominus" donated property to Savigny by charter dated to [1153/62], witnessed by "…domina Emma matre mea…"[485]. "Guido Lavallensis dominus" relinquished the parish of la Gravelle to Marmoutier, with the advice of "fratris mei Hamonis, et uxoris mee Agathe et filiorum meorum Guidonis atque Sicilie", by charter dated to [1142/85][486]. "Guido de Lavalle" donated property to Sainte-Trinité de Fougères with the consent of "Guidonis filii mei et Hamonis fratris mei et Emme uxoris mee" by charter dated 1180[487].m EMMA of Cornwall, daughter of REINALD Earl of Cornwall & his wife Beatrice FitzWilliam (-1208 or after, bur Abbaye de Clermont). "Guido Lavallensis dominus" relinquished the parish of la Gravelle to Marmoutier, with the advice of "fratris mei Hamonis, et uxoris mee Agathe et filiorum meorum Guidonis atque Sicilie", by charter dated to [1142/85][488]. "Agathe" in this document is an error for "Emma", as shown by the charter dated 1208 under which "Guido sextus dominus Lavallensis" ratified a donation by "patris mei" to the canons of "castellilo Lavallensi", witnessed by "…Emma matre mea, Hayoisia uxore mea…"[489]. "…Emme uxoris mee" consented to the donation by "Guido de Lavalle" to Sainte-Trinité de Fougères by charter dated 1180[490]. The primary source which confirms her parentage has not yet been identified. Guy [IV] & his wife had [three] children