The primary source which confirms his parentage has not yet been identified. [Domesday Book records land held by “Herbert the Chamberlain” in Rhode and Selborne in Neatham Hundred, Soberton in Meonstoke Hundred in Hampshire. It is not known whether these entries relate to the future chamberlain of King Henry I.]
Chamberlain of Henry I King of England from 1101. "…Herbertus regis camerarius…" subscribed a charter dated Sep 1101 under which Bishop Herbert donated property to Norwich priory. The Hyde Register lists "Herbertus camerarius, Arnulfus filius eius, Emma uxor eius" immediately after the names of King Henry I and his first wife. An undated charter of Thomas Archbishop of York records that "domino Herberto Camerario et filio eius" were enfeoffed with "Laudesbrough, cum Tolethorpe, Wiverthorpe cum Helperthorp et duabus Luttunis in Turgisleby" and other properties in Yorkshire and in Gloucestershire, witnessed by "…Herbertus filius…". The 1130 Pipe Roll records "Herb Camer" in Bedfordshire and Warwickshire. As his son appears in the same source holding lands of his father, it is assumed that Herbert FitzHenry died during the course of that year. 1