William I de LANCASTER & Gundred de WARRENNE 
They had a son named William II (Sir) de.
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Personal Details
William I de LANCASTER
William I de was born about 1109 in Workington, Coupland, England. He died in 1170 in Kendal, Wstmoreland, England.
Gundred de WARRENNE
Gundred de was born about 1117 in Warwick Warwickshire, England. Gundred de is no longer alive.
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Children
William II (Sir) de LANCASTER
William II (Sir) de was born about 1154 in Kendal, Westmoreland, England. He died in 1184.