William (Sir) III de WASHINGTON & Margaret de MORVILLE 
They had a son named Walter (Sir) III de.
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Personal Details
Margaret de MORVILLE
Margaret de was born about 1250 in Helton Fleckett, Barony of Appleby, Cumberland, England. Margaret de is no longer alive.
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Children
Walter (Sir) III de WASHINGTON
Walter (Sir) III de was born before 1270 in Washington, Durham, England. He died after 1315.