John Beaufort
John was born on March 25th, 1404.  He died at the age of 40 on May 27th, 1444.

 Margaret de Beauchamp
Margaret was born about 1412.  She died on August 8th, 1482.

 Margaret Beaufort
Margaret was born on May 31st, 1443 in Bletsoe Castle, Bedfordshire, England.  She died at the age of 66 on June 29th, 1509 in Abbot's House, Cheyney Gates, Westminster, England.  She was buried in Westminster Abbey, London, England.