Thank you for your inquiry. I am not normally on the internet so this is the first time that I have seen your question. There are a number of origins for the Barnaby name. There was a James Barnaby living in Plymouth, Mass in the middle 1600's. We do not know his origin however we presume that he was English. There are a couple of lines that originated in Quebec,and Nova Scotia ,Canada. In those cases an individual just decided to change his name. Contact me by e-mail if you would like more firstname.lastname@example.org Many years ago I interviewed a Barnaby family from Jamaica who were living in the District of Columbia.