John "Of Gaunt", Duke of Lancaster
John "Of Gaunt", Duke of was born in March 1340 in Abbey de St Bavon,Ghent,France.  He died at the age of 57 on February 3rd, 1398 in Leiceshire,England.

 Constanza Perez, Princess of Castile & L
Constanza Perez, Princess of Castile & was born in 1354 in Burgos,Spain.  She died at the age of 40 in 1394.

 John Plantagenet, Prince of England
John Plantagenet, Prince of was born in 1372 in Hertfordshire,England.

 Catherine of Lancaster
Catherine of was born in 1372.  She died at the age of 46 in 1418.

 Catherine Plantagenet Princess of England Princess o
Catherine was born on March 31st, 1373 in Hertfordshire,England.