Family: Henry DE PERCY, 3rd Baron Percy of Alnwick / Mary, of Lancaster (F3842)
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Male
Henry DE PERCY, 3rd Baron Percy of Alnwick
Birth Abt 1321 Death Abt 18 May 1368 Alnwick, Northumberland, England 
Burial 1368 Alnwick Abbey Marriage Other Spouse Joan DE ORREBY | F5433 Marriage Abt 1365 Father Sir Henry PERCY, 9th Baron Percy of Topcliffe, 2nd Baron Percy of A | F3965 Group Sheet Mother Idonia DE CLIFFORD | F3965 Group Sheet
Female
Mary, of Lancaster
Birth Abt 1320 Death 1362 Burial Father Henry PLANTAGENET, 3rd Earl of Lancaster | F3827 Group Sheet Mother Maud DE CHAWORTH | F3827 Group Sheet
Male
+ Henry PERCY, 1st Earl of Northumberland, 4th Baron Percy, King
Birth 10 Nov 1341 Alnwick, Northumberland, England Death 20 Feb 1408 Braham Moor, Yorkshire, England Burial Spouse Margaret NEVILLE | F5396 Marriage Spouse Maud DE LUCY, Baroness Lucy | F5432 Marriage 1381
Male
Sir Thomas DE PERCY, 1st Earl of Worcester, KG
Birth 1343 Death 23 Jul 1403 Shrewsbury, Shropshire, England Burial St. Peter's Church, Shrewsbury, Shropshire, England
