John Plantagenet of Gaunt
John Plantagenet of was born on June 24th, 1340 in St, Bavon's Abbey, Ghent, Flandre-Orientale, Belgium.  He died in Leicester Castle, Leicester, Leicestershire, England.  He was buried in St. Paul's Cathedral, London, England.

 Catherine Swynford Roet
Catherine Swynford was born on November 25th, 1340 in Picardy, Hainault or Somme, France.  She died at the age of 62 on May 10th, 1403 in Lincoln, Lincolnshire, England.

 John de Beaufort
John was born in 1373.  He died in Tower of London.

 Henry de Beaufort
Henry was born in 1377.  He died at the age of 70 on April 11th, 1447.

 Thomas de Beaufort
Thomas was born about 1377.

 Joan de Beaufort
Joan was born about 1379 in Beaufort Castle/Chateau de Beaufort, Maine-et-Loire, France.  She died on November 13th, 1440 in Howden, Yorkshire, England.  She was buried in Lincoln Cathedral.