Some of the names you have, I do not, for example I have two people with the surname Richardson in my tree, but they were born in the 1940's and the 1970's. I have two Rennels, one born in the 1800s and the other with no birth date at present, and no Charles Blackler's anywhere. This was the reason why I suggested you contacted Nigel with your tree as he is very good at picking up accidental deviations! I wish you the best in contacting Nigel, and I would love to know either way whether there is ultimately a link between us. In the meantime, if you'd like a copy of my tree, please let me know how you would like me to email it over to you. Best wishes, Sarah