William Percy 
William was born in 1332 in of, Alnwick, Northumberland, England. William's father was Henry Dedist of Columb Percy and his mother was Idonea Dedist of Columb Clifford. He had five brothers and four sisters, named Henry Dedist of Columb, Richard, Roger Dedist of Columb, Robert, Thomas Dedist of Columb, Margaret Dedist of Columb, Isabel Dedist of Columb, Maud Dedist of Columb and Eleanor. He is the third youngest of the ten children.
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