"Main pater Willelmi de Albinico, Adelisa, Hunfredus de Buun avunculus eius…Willelmu[us] de Albinioc…" are listed in the Liber Vitæ of Thorney abbey. Matthew Paris records the prowess of "Willelmus de Albeneio Brito" at the battle of Tinchebrai in 1106. "…Willo de Albin Brit…" subscribed the charter dated to [10 Apr/29 May] 1121 which records the arrangements for the marriage of "Miloni de Gloec" and "Sibilia filia Beorndi de Novo Mercato". The Historia sancti Petri Gloucestriæ records that "Robertus filius Walteri et Avelina uxor eius" donated "ecclesiam de Nortone", as previously donated by "Elmelina mater Avelinæ ante plures annos", in 1126, and the subsequent paragraph records that "Willelmus Brito" donated "ecclesiam de Nortone" with the consent of "rege Henrico seniore…tempore [Willelmi] abbatis" [abbot from 1113 to 1131]. "W. de Alb Britone" witnessed the charter dated to [1125/29] under which Henry I King of England confirmed a donation to Thorney abbey.
He owned part of the fee of Belvoir before his mother-in-law held it, The Complete Peerage concluding therefore that the marriage may have been arranged to settle rival claims. The 1130 Pipe Roll records "Willo de Albin brit" in Essex, Hertfordshire, Northamptonshire, Leicestershire, Lincolnshire, in the honour of Berkeley in Rutlandshire, and in Northamptonshire. "Willielmus de Albeneio Brito…et Ceciliam uxorem meam et Willielmum filium meum" donated land to Thorney monastery, Cambridgeshire by undated charter, witnessed by "Rogero et Roberto filiis meis et Warino Ridel et Olivero et Iwan et Gaufrido nepotibus meis et Roberto Brito…”. "Willielmus de Albenei Brito" donated "terram de Pipewell…de feodo de Bellovidere" to Thorney monastery, Cambridgeshire, with the consent of "Ceciliæ uxoris meæ et Willelmi filii mei", by undated charter, witnessed by "…tres nepotes mei, Oliverus filius Galfridi et Iwanus et Gaufridus de Cabivin…”. 1