Duke of Lancaster John of Gaunt
Duke of Lancaster John of was born in March 1340 in St Bavon's Abbey, Ghent Belgium.¹   He died at the age of 58 on February 3rd, 1399 in Leicester Castle, Leicestershire, England.  He was buried in St. Paul's Cathedral, London, Middlesex, England.^1 1 

 Riena De Castilla Constanza De Castilla

 Katherine of Lancaster
Katherine of was born about 1373.  She died on June 2nd, 1418.