• General Notes

  Sir Roger Vaughan, youngest son of Sir Roger Vaughan who was killed at Agincourt and his wife Gladys Gam, was ancestor of the Vaughans of Tretower, County Brecon, and was Lord of Cantriff-Seliff. His younger half-brother, son of Gladys and her 2nd marriage, was William, Earl of Pembroke, and was his firm friend and obtained for him several lordships. Sir Roger married Denise, daughter of Thomas ap Phillip Vaughan of Tyle Glas. He married 2nd Margaret, daughter of James Touchet, Lord Audley, slain at Bloreheath 1458. By Denise he had Sir Roger, ancestor of the Vaughans of Talgarth, and four daughters.
  (Kin of Mellcene Thurman Smith, page 788)

Details of Roger's family with Margaret Touchet