John 'of Gaunt' ENGLAND
John 'of Gaunt' was born in March 1340 in Abbaye de St. bavon, Ghent, Belgium.  He died in Leicester Castle, France.

 Catherine de ROET
Catherine de was born in 1350 in Picardy, France.  Catherine de is no longer alive.

 Joan BEAUFORT
Joan was born about 1375 in Chateau de Beaufort, Maine, France.