*Henry de Percy
born 6 February 1300/01 Leconfield, Yorkshire, England
died 26 February 1351/52 Warkworth, Northumberland, England
buried 1352 Priory of Alnwick, Northumberland, England

father:
*Henry de Percy
born 25 March 1273 Petworth, Sussex, England
died 2 October 1314 Fountains Abbey, Yorkshire, England
buried Fountains Abbey, Yorkshire, England

mother:
*Eleanor Fitzalan (Arundel)
born about 1277 Arundel, Sussex, England
died July 1328
buried Beverley, Yorkshire, England
married about 1299 Alnwick, Northumberland, England

siblings:
William de Percy born 1301 Alnwick, Northumberland, England died 1355

spouse:
*Idonea de Clifford
born about 1300 Appleby, Westmoreland, England
died 24 August 1365
buried Beverley Minster, Beverley, Yorkshire, England
married 1314 Yorkshire, England

children:
Margaret de Percy born about 1318 Alnwick, Northumberland, England
christened Alnwick, Northumberland, England
died 3 September 1376 Gyng, New Buttsbury, Essex, England buried Church of Friars, Chelmsford, Essex, England
*Henry de Percy born 1320 Castle Alnwick, Northumberland, England
died 18 May 1368 buried Alnwick, Northumberland, England
Richard de Percy born 1322 Alnwick, Northumberland, England
Roger de Percy born about 1324 Alnwick, Northumberland, England
Robert de Percy born 1326 Alnwick, Northumberland, England
Isabel de Percy born about 1326 Alnwick, Northumberland, England died 1368
Thomas de Percy born 1328 Alnwick, Northumberland, England died 1369
William de Percy born 1332 Alnwick, Northumberland, England
*Maud de Percy born about 1335 Warkworth Castle, Alnwick, Northumberland, England
died 18 February 1378/79 buried Durham Cathedral, Durham, England
Eleanor de Percy born about 1336 Alnwick, Northumberland, England died before 1368

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com