Nicholas d'Oisy was born circa 1137 to Gautier d'Oisy (-1147) and Ide de Mortagne (c1122-c1169) and died circa 1170 of unspecified causes. He married Mathilde de Namur (c1120-c1170) . Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s.
|Offspring of Nicholas d'Oisy and Mathilde de Namur (c1120-c1170)|
|Jacques d'Avesnes (c1150-1191)||1152||7 September 1191||Adeline de Guise (aft1150-c1191)|