John was born at
St. Bavon's Abbey, Ghent, Flanders, Belgium, in March 1340. He was the son of
King of England Edward III (?) and
Phillippa of Hainault (?). Duke of Lancaster John of Gaunt Plantagenet married
Blanche of Lancaster (?) on 19 May 1359 at
Reading Abbey, Berkshire, England. Duke of Lancaster John of Gaunt Plantagenet married
Queen of Castile Constanza (?) on 21 September 1371 at
Roquefort, Guienne. He married
Katherine Ruet at
Lincoln Cathedral on 13 January 1396. John died on 3 February 1399 at
Leicester Castle, England, at age 58. His body was interred in February 1399 at
London, England, at St. Paul's Cathedral.