William FitzDurand de Mohun & partner 
They had a son named Ralph.
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Personal Details
William FitzDurand de Mohun
William was born in 1125 in Withycombe, Williton, Somersetshire, England.1
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Children
Ralph FitzWilliam de Mohun
Ralph was born in 1150 in Brompton Ralph, Williton, Somersetshire, England.1