Roger 'The Poitevin' MONTGOMERY 
Roger 'The Poitevin' was born about 1058 in marche, Poitou, France. He died after 1102.
They had a daughter named Avice de.
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Children
Avice de LANCASTER
Avice de was born about 1088 in Nottingham, Notinghamshire, England. She died after 1149.