William dePercy III Baron De Percy & Alice deRos 
They had a son named William dePercy IV Baron.
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Personal Details
William dePercy III Baron De Percy
William dePercy III Baron was born in 1092 in North Riding, Yorkshire, England.
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Children
William dePercy IV Baron De Percy
William dePercy IV Baron was born in 1112 in North Riding, Yorkshire, England. He died at the age of 56 in 1168.
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