Richmond and Derby, Margaret Beaufort, countess of
Richmond and Derby, Margaret Beaufort, countess of:
see Beaufort, MargaretBeaufort, Margaret, countess of Richmond and Derby, 1443–1509, English noblewoman, mother of Henry VII. She was the daughter and heiress of John, 1st duke of Somerset, and great-granddaughter of John of Gaunt, duke of Lancaster.
..... Click the link for more information. .