Walter FitzOther was a feudal baron of Eton in Buckinghamshire and was the first Constable of Windsor Castle in Berkshire, a principal royal residence of King William the Conqueror, and was a tenant-in-chief of that king of 21 manors in the counties of Berkshire, Buckinghamshire, Surrey, Hampshire and Middlesex, as well as holding a further 17 manors as a mesne tenant in the same counties.

The Constable and Governor of Windsor Castle is in charge of Windsor Castle in England on behalf of the sovereign. The day-to-day operations are under the Superintendent, who is an officer of the Master of the Household's Department of the Royal Household.