Isabella married Henry Plantagenet, 1st. Duke of Lancaster. Henry (son of Henry Plantagenet, 3rd. Earl of Leicester & Lancaster and Maud Chaworth) was born about 1310 in Grosmont, Monmouthshire, Wales; died on 23 Mar 1361 in Leicester Castle, Leicester, Leicestershire, England. [Group Sheet]

1. Blanche Plantagenet, of Lancaster, Countess of Derby was born on 25 Mar 1345; died on 12 Sep 1369 in Bolingbroke Castle, Lincolnshire, England; was buried in St. Paul's Cathedral, London, England.