William (unknown) 
Simon Robert
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| Simon Robert
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William de Pierrepont
abt 1160, Holywells, Suffolk England - ??, Holywells, Suffolk England
(unknown)
1164, Castle Bytham, Holywell, Lincolnshire England - ??
Married: ?? - ??
Simon de Pierrepont
abt 1191, Hurstpierpoint, West Sussex England - ??
Robert de Pierrepont
1193, Holme-Pierrepont, Nottinghamshire England - 1285, Hurstpierpoint, West Sussex England