Marriage: DE BEAUFORT, John Earl of Somerset on Aug 23, 1397
Died: 1439 at age 54
Margaret married John DE BEAUFORT Earl of Somerset, son of John of Gaunt PLANTAGENET King of Castile and Leon and Duchess Katherine ROET, on Aug 23, 1397. (John DE BEAUFORT Earl of Somerset was born in 1373 and died in 1410 1.)
Weebers, Hans, Genealogy of the Presidents of the USA at http://users.LegacyFamilyTree.com/USPresidents/Index.htm (http://users.legacyfamilytree.com/USPresidents).