Hello Sara Hunting around the web re Benjamin Smith I found this http://en.wikisource.org/wiki/Memoirs_of_Sir_Isaac_Newton%27s_life/Genealogy_of_Newton It is written by William Stukely in 1752. Gives both Newton and Smith genealogy. You may of course have seen it, but just in case. As it is written close to the action as it were, it is probably correct. You might find the Newton cousin you are looking for. Best wishes Mary