*Mary Plantagenet of Lancaster
born 1320 Tutbury Castle, Tutbury, Staffordshire, England
died 1 September 1362
buried Alnwick, Northumberland, England

father:
*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

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

siblings:
*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

spouse:
*Henry de Percy
born 1320 Castle Alnwick, Northumberland, England
died 18 May 1368 buried Alnwick, Northumberland, England
married September 1334 Tutbury Castle, Tutbury, Staffordshire, England

children:
*Henry de Percy born 10 November 1341 Alnwick Castle, Alnwick, Northumberland, England
christened 10 November 1341 Northumberland, England
died 19 February 1407 Bramham Moor, Bramham, Yorkshire, England
buried York Minster, Yorkshire, England
Thomas Percy born about 1345 Alnwick, Yorkshire, England
died 21 July 1403 Shrewsbury, Shropshire, England
Isabel Percy born about 1345 Alnwick, Yorkshire, England

biographical or anecdotal information:


source:
LDS
ancestry.com