*Henry Plantagenet 3rd Earl of Lancaster
born about 1281 Grismond Castle, Monmouth, England
died 22 September 1345 Monastry of Cannons, England
buried Monastry of Cannons, England

father:
*Edmund "Crouchback" Plantagenet Prince of England Earl of Lancaster
born 16 January 1243/44 London, England
died 5 June 1296 Bayonne, Pyrennes-Atlantiques, France
buried Westminster Abbey, Middlesex, England

mother:
*Blanche d'Artois
born 1245/50 Arras, Pas-de-Calais, France
died 2 May 1300 Paris, Seine, France
buried Minoresses Convent, Aldgate, Middlesex, England

siblings:
Thomas Plantegenet
David Plantegenet

spouse:
*Maud de Chaworth
born 1282 Kidwelly, Glamorganshire, Wales
died after 19 February 1317
buried before 3 December 1322 Priory, Mottisfont, Hampshire, England
married before 2 March 1296/97

children:
*Maud of Ulster Plantagenet born 1298/1304 Lancaster, Lancashire, England
died about 5 May 1377 buried Priory, Campsey, Suffolk, England
Henry Lancaster born about 1299 Grismond Castle, Monmouth, England died 24 March 1360/61
Blanche of Lancaster born about 1302 Grismond Castle, Monmouth, England died 10 July 1380
Isabel of Lancaster born about 1308 Grismond Castle, Monmouth, England died after 1 February 1347
Eleanor Plantagenet born about 1311/22 Grismond Castle, Monmouth, England died 11 January 1372 Arundel, Sussex, England
*Joan of Lancaster born about 1320 Grismond Castle, Monmouth, England
died 7 July 1349
*Mary Plantagenet of Lancaster born 1320 Tutbury Castle, Tutbury, Staffordshire, England
died 1 September 1362 buried Alnwick, Northumberland, England

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com