Research Notes:

The Chronicon Sancti Andreæ names "Walterus et pater eius Walterus et nepos eius Hugo". The Gesta Episcoporum Cameracensium records that the bishop of Cambrai installed "Hugonem Gualteri castellani defuncti nepotem…adhuc puer" as Châtelain de Cambrai, under the tutorship of "propinquum quondam Ansellum" (Anselme de Ribemont Comte d'Ostrevant). "Walterus Duacensis" bought property from "fratre suo" [indicating Hugues [I] de Douai], with the consent of "Adriana…sua uxore, eorumque filio Symone" [both referring back to Hugues], by charter dated to [1074]. The Gesta Pontificum Cameracensium (Gesta Burchardi I) names "Hugo de Osgiacho filius Hugonis castellanus Cameracensis" when recording that he was installed as châtelain de Cambrai. The text also refers to "comes Robertus", which presumably refers to Robert II Count of Flanders. As count Robert died in 1111, this passage must refer to Hugues [I]. “Ansellus Valencen, castellan. Ribedimontis et Oestrevandie dominus” founded Anchin abbey by charter dated 1096, in the presence of “...Hugo castellanus, Amalricus Rufus dictus de Marcoeng gener eius...”. "Gautherii, prius castellani Duacensis, modo autem clerici, Hugonis, fratris eiusdem, Cameraco, Rogeri castellani de Insula, Frimoldi de eadem Insula…" signed the charter dated 3 Feb 1097 which records the settlement of a dispute between the count of Flanders and the abbey of Saint-Martin de Tours. ²