de Montgomerie (Montgomery) is a prominent family of Anglo-Norman origin, belonging to both French and British nobility. At the turn of the 12th century, the family was one of the leading families, with Robert de Bellême being the wealthiest and most powerful magnate in England and Normandy.C. Warren Hollister, Henry I (New Haven & London: Yale University Press, 2003), p. 155 The House was succeeded by the House of Belleme.
