Bertram de Verdun, d'Avranches

Bertram de Verdun is probably a brother of Norman as per Mark S. Hagger :

“Although a Bertram de Verdun witnesses William de Verdun's agreement with Mont-St-Michel over the mill at Tiseel in 1155, it is likely that this was the same Bertram who had witnessed one of Ranulf II of Chester's charters during Stephen's reign and who had also witnessed charters issued by Hugh and Henry of Arden to Kenilworth priory sometimeb etween 1139 and 1147. This Bertram was perhaps Bertram III's uncle. (…) The Bertram de Verdun who attests Ranulf II's charter in 1146 is probably not Bertram III de Verdun, as Barraclough suggested, but the same Bertram de Verdun who appears in the witness lists of confirmations issued by Hugh and Henry of Arden to Kenilworth priory, which can be dated to between 1139 and 1147. It may also be this same Bertram who appears in William de Verdun's agreement in Mont-St-Michel in 1155. His name and his links with the earldom of Chester, Warwickshire and the west of Normandy suggest that he was one of Norman's brothers, but the evidence is by no means unequivocal.”

Mark S. Hagger, “The Fortunes of a Norman Family: The de Verduns in England, Ireland and Wales, 1066-1316”, Four Courts Press, 2001, pages 17 et 232. https://core.ac.uk/download/pdf/8763970.pdf

Un frère probable de Norman, Bertram, apparait comme témoin en 1139 et 1147 dans deux actes du prieuré de Kenilworth, et en 1146 dans un acte de Ranulf II de Chester .

Mark S. Hagger, pages 17 et 232: “Although a Bertram de Verdun witnesses William de Verdun's agreement with Mont-St-Michel over the mill at Tiseel in 1155, it is likely that this was the same Bertram who had witnessed one of Ranulf II of Chester's charters during Stephen's reign and who had also witnessed charters issued by Hugh and Henry of Arden to Kenilworth priory sometimeb etween 1139 and 1147. This Bertram was perhaps Bertram III's uncle. (…) The Bertram de Verdun who attests Ranulf II's charter in 1146 is probably not Bertram III de Verdun, as Barraclough suggested, but the same Bertram de Verdun who appears in the witness lists of confirmations issued by Hugh and Henry of Arden to Kenilworth priory, which can be dated to between 1139 and 1147. It may also be this same Bertram who appears in William de Verdun's agreementw in Mont-St-Michel in 1155. His name and his links with the earldom of Chester, Warwickshire and the west of Normandy suggest that he was one of Norman's brothers, but the evidence is by no means unequivocal.”

C’est peut-être le Bertasius de Verdun qui en 1144 fait don aux moines de La Lucerne d’une demi-acre de terre près d’Avranches dans la charte de confirmation des biens de cette abbaye par Richard de Subligny, évêque d’Avranches (1142-1153). L’abbaye de la Lucerne avait été fondée l’année précédente par son frère Hasculphe de Subligny.

« Ricardus Dei gratia Sanctae Abrincensis ecclesiae episcopus tam presentibus quam futuris Sanctae Matris ecclesiae pastoribus salutem. […] Lambertus de Oviete et Berengarius frater ejus, duas acras terrae juxta murum Abrincensis civitatis et Bertasius de Verduno dimidiam acram. […] » Abbé Pigeon, « Le diocèse d’Avranches », paru dans les Mémoires de la Société académique du Cotentin (archéologie, belles-lettres, sciences et beaux-arts), tome VI, Coutances, 1888, pp. 669 à 671.

Vers 1140-1150 un Bertram de Verdun est cité comme témoin dans un acte du cartulaire du Mont-Saint-Michel par lequel Guillaume de Ducey et sa mère Cécile confirme la donation de la terre du Fougeray à Bacilly à l’abbaye du Mont-Saint-Michel, faite autrefois par Robert de Ducey, père de Guillaume. Parmi les témoins : Ranulf comte de Chester et vicomte d’Avranches (†1153).

« … Hoc autem factum est in comitis Ranulphi et baronum suorum Abricatensium praesentia. Excepto Radulphi de Vin terram quam de me tenebat. Hoc donum hujus terre concedo ego Guillelmus filius Roberti post mortem patris mei cum Cecilia. Hujus rei sunt tester Robertus de Duxeio, Rannulfus comes, Robertus grevesac, Radulfus de Veim, Radulfus de Brei, Alveredus de Maci, Gradalonus de Taneia, Turgisus de Taneia, Guillelmus vavassor, Gislbertus filius Adam, Hamelinus filius Adam, Guillelmi de Vira, Bertrannus de Verdun, Stephanus de Eschailli, Rannulfus & Rannulfus de Grandevilla, Guillelmus filius Roberti de Duxeio, Cecilia uxor Roberti, Judicalis presbiter, Richardus Cardonis, Alveredus de Maci, Guillelmus de Boce, Richardus Levelatus, Rogerius prepositus, Rogerius de Borrian, Crispinus, Rogerius de Brafes ».

Cartulaire de l’abbaye du Mont-Saint-Michel, Bibl. d’Avranches, Ms. 210, folio 85v-86 : https://www.unicaen.fr/bvmsm/img-server/IMG/Avranches_BM/MSS/Avranc... https://www.unicaen.fr/bvmsm/img-server/IMG/Avranches_BM/MSS/Avranc...

C’est peut-être encore ce Bertram qui signe comme témoin de Guillaume de Verdun dans un acte de 1157 où ce dernier passe un accord avec les moines du Mont-Saint-Michel au sujet du moulin de Tissey, à Dragey.

« Acte 2834 », dans SCRIPTA. Base des actes normands médiévaux, dir. Pierre Bauduin, Caen, CRAHAM-MRSH, 2010-2019 [En ligne] https://www.unicaen.fr/scripta/acte/2834