Walter of Douai (Old Norman: Wautier de Douai) (born c.1046, died: c.1107) was a Norman knight, probably at the Battle of Hastings, and a major landowner in South West England after the Norman Conquest,[1] being feudal baron of Bampton in Devon and of Castle Cary in Somerset. He is given various names and titles in different sources including: Walter (or Walschin or Walscin) de Douai. Douai is sometimes written as Dowai. He has also been called Gautier de Douai and later Walter the Fleming.