Henry Grosment Plantagenet
Henry Grosment was born about 1306 in Grosmont Castle, Grosmont, Monmouthshire, England.  He died on March 23rd, 1361.

 Isabel De Beaumont
Isabel was born about 1315 in England.  She died in 1361 in England.

 Blanche De Lancaster
Blanche was born on March 25th, 1345 in Lancaster, Lancastershire, England.  She died at the age of 24 on September 30th, 1369 in Bolingbroke Castle, Lincolnshire, England.  She was buried in St. Paul's Cathedral, London, Middlesex, England.