Research Notes:

Guillaume of Jumièges names “quinque filios et quatuor filias...Robertus et Hugo, Rogerius Pictavinus, Philippus et Arnulfus, Emma, Mathildis, Mabilia et Sibylla” as the children of “Willelmus Talavatius...filiam suam...Mabiliam” and “Rogerium de Monte-Gummeri”. Orderic Vitalis names “Rodbertus de Bellismo, Hugo de Monte-Gomerici, Rogerius Pictavinus, Philippus atque Arnulfus” as the five sons of “Rogerius [de Monte-Gomerici]” and his first wife. "Roger ex Northmannis Northmannus son of Roger" donated property to St Martin, Troarn for the soul of "his wife Mabel lately deceased" by charter dated to [1079/82], subscribed by "Rogerii comitis, Rotberti filii eius, Hugonis, Rogerii, Philippi, Arnulfis [filiorum eius]". "Rotbertus de Belismo filius Rotgerii comitis et Mabilie" donated the church of Saint-Léonard de Bellême, built by "Willelmus attavus Rotberti", to Marmoutier, with the consent of "fratres ipsius Rotberti, Hugo, Rotgerius, Arnulfus", by charter dated 1092. “Rogerus comes Pictavensis” founded the priory of Lancaster, for the salvation of “Rogeri Seroberie patris sui matrisque sue Mabilie cometisse”, and donated “duos mansiones Audecliua et Neutona...cum dignitate et consuetudinibus quas ipse habebat et Amfridum de Monte Gomerii” and other specified properties, by undated charter witnessed by “predictus comes et filia eius Sibilla et G. Vicecomes...”. “Amfridus de Monte Gomerii”, who is named in this document, has not otherwise been traced. Roger was a considerable landowner in England especially in Lancashire but was banished in 1102 with his brother Robert and retired to Poitou.

Comte de la Marche in 1113, de iure uxoris. ²