William III de Percy & Sibyl de Valognes 
William III and Sibyl were married in a religious ceremony about 1166. They had two sons and two daughters, named Walter, William, Alice and Emma.
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Personal Details
William III de Percy
William III was born in Alnwick, Northumberland, England. He died in 1175 in Topcliffe. He was buried in 1175 in Fountains Abbey, England.
Sibyl de Valognes
Sibyl was born about 1129. She died after 1212. She was buried in Nun Appleton Priory.
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