Hi Marianne, my COULSONs are possibly unrelated, but I just wanted to say the name is thought to derive from COLESON, and as spelling was not fixed at that time don't forget to look for: COLESSUN (London 1138) COLESONE (Staffordshire 1332) COLLESON (Suffolk 1386) COLLESSON (Yorkshire 1401) COLSON (Yorkshire 1408) Regards, David