Elizabeth De Newburgh

• General Notes
  • Henry de Beaumont, who was made Earl of Warwick. He married Margaret, daghter of Geoffrey, Earl of Morton, and had two sons - Roger and Robert de Neuborg, and a daughter, Elizabeth, who was the grandmother of Isabel, wife of the illustrious William Marshal, a.k.a. Guillaume le Maréchal, who became the Earl of Pembroke through marriage to Isabel de Clare, descendant of Gilbert de Brionne. His brother, John Marshal, had a mistress named Alice de Colleville, descendant of the Crispin family.
    
    http://www.stanhopefamilyorigins.com/