William de PERCY & Elena de BALIOL 
They had a son named Henry II.
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Personal Details
William de PERCY
William de was born in 1183 in Alnwick, Northumberland, England. He died at the age of 62 in 1245.
Elena de BALIOL
Elena de was born about 1200 in Alnwick, Northumberland, England. She died in November 1281.
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Children
Henry II PERCY
Henry II was born in 1228 in Alnwick, Northumberland, England. He died at the age of 44 in 1272.