This is a long-shot but I am looking also for Allens in MA.The possible connection to your line lies in your mention of Bellingham, MA and Cumberland, RI.My line is as follows:Lurana Matilda Allen b. 8/6/1846 in Bellingham, MA, d. 3/28/1912 in Medway, m. 8/19/1869 James M. Seavey.Lurana's parents were James Wellington Allen b. 9/27/1815 in Wendell ME, d. 10/22/1881 in Franklin, MA, m. 11/24/1840 Jane Whiting.James Wellington's parents were Moses Allen who m. 4/28/1800 Betsy Freeman of Cumberland RI.Other children of Moses and Betsy were Charlotte b. 7/18/1807, George b. 7/7/1802, Mary b. 7/3/1800 and Rodney b. 4/30/1805.Also interesting although probably irrelevant is the use of the given name Sanford.Jane Whiting's family made great use of the name.Do you have any information on that name?If you should see any connection or have any suggestions, please let me know.I am somewhat stuck with Moses and Betsy.Thanks.