 For example, Robert of Normandy loaned the Duchy of Normandy to his brother William II of England, and Godfrey sold or mortgaged his property to the church.According to Tancred's biographer, he was worried about the sinful nature of knightly warfare, and was excited to find a holy outlet for violence.Tancred and Bohemond, as well as Godfrey, Baldwin, and their older brother Eustace III, Count of Boulogne, are examples of families who crusaded together.