 Another proposes that the Lordship of Holderness was granted to William's sister Adelaide, in 1087, and Odo became Earl of Holderness by right of his wife.Odo was, with Alan Rufus and Roger of Poitou, one of the commanders of the army sent by King William II to besiege William de St-Calais at Durham Castle after the Rebellion of 1088, and who signed St-Calais's guarantee of personal safety.Odo was implicated in a plot to place his son Stephen of Aumale on the English throne.