Margaret de Beaumont, 7th Countess of Warwick
Earl of Warwick
Margaret de Beaumont, 7th Countess of Warwick or Margaret de Neubourg or Margery de Newburgh was the daughter of Henry de Beaumont, 5th Earl of Warwick and Margaret D'Oyly. She was the sister and heiress of Thomas de Beaumont, 6th Earl of Warwick... Wikipedia
Died: June 3, 1253
Grandparent: Waleran de Beaumont, 4th Earl of Warwick
Siblings: Thomas de Beaumont, 6th Earl of Warwick
Partner: John du Plessis, 7th Earl of Warwick and John Marshal