See also
1. Alianore, daughter of John, Earl of SURREY ( - ), married Henry de Percy.
Henry de Percy, son of William de Percy (c. 1193-1245) and Eleanor de Baliol (c. 1206- ), was born circa 1235 in Whitby, Yorkshire. He married Eleanor PLANTAGENET on 8 September 1268 in York. He died on 29 August 1272 in Sallay Craven, Yorkshire. He and Alianore had the following children:
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2. Henry, 1st Lord Percy of Alnwick, son of Henry de Percy and Alianore, died in 1315.
Henry, 1st Lord Percy of Alnwick had the following children:
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3. Henry, 2nd Lord Percy of Alnwick, son of Henry, 1st Lord Percy of Alnwick and Baroness Eleanor FITZALAN, was born on [Julian] 6 February 1300 in Leconfield, Yorkshire. He married Idonia de CLIFFORD.
Idonia de CLIFFORD (also known as Idoine CLIFFORD and Idonia), daughter of Robert, Lord CLIFFORD (1274-1314) and Maud de Clare ( - ), was born circa 1300. She died on 24 August 1365. She and Henry, 2nd Lord Percy of Alnwick had the following children:
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