I roto i te 1096, i hanga e Robert he ope, a ka mahue mo te Whenua Tapu i runga i te First Crusade. I te wa o tona wehenga i ia i pera rawakore e ia maha i ki te noho i roto i te moenga no te kore o te kakahu. Ki te kohikohi moni mo te pakanga, ka whakapau ia tona Duchy ki tona teina William mo te moni o 10,000 tohu. Pātai: Me pehea i utua ai e Robert te hanganga me nga mahi o tana pakanga?
I whakawhiwhia e ia tana rangatiratanga ki tana teina a William