Robert III Beaumont de Neufbourg, Lord of Neufbourg, was born 1193 to Robert II de Neufbourg (c1170-c1217) and Marguerite de Gloucester and died 1243 of unspecified causes. He married Jeanne de Mauquenchy 1215 JL . Charlemagne (747-814)/s, Hugh Capet (c940-996)/s.
|Offspring of Robert III de Neufbourg and Jeanne de Mauquenchy|
|Marguerite de Neufbourg (1223-1277)||1223||1277||Amaury II de Meulan (c1180-c1260)|