It would be wonderful if I have found a lead on this Richardson line...I have been trying to find them for over a year. William is listed in the 1850 US Federal Census, living in Chlemsford, MA. He is 27 years old, so that would make his birthdate about 1823. With him in Chelmsford is wife Eunice, 25, and three children aged 1 year to 6 years. The youngest, Isaac William Richardson is my 2nd great-grandfather. Thank you for any information you might be able to provide.