Well as you can see my last name is the one you are asking about.. From the things I have found, or at least my Mum has! haha. It is one of the oldest names in the South of England. It is derived from Col and was something to do with a Polish monk or something, going way back to the Domesday book. I have a sheet at home with a whole bunch of info if I remember corectly it means of "swarthy complexion", it includes a coat of arms and the family motto. This is pretty vague as I was just bored at work and looked up my name! Looking at the string it is a few weeks old if I see a response I can email you a scanned copy of it if you like..