It has been two years since your request was posted. I, too, am a descendant of Prudence Wright. Her daughter, Caroline Matilda married Samuel Hartwell, one of my ancestors. Are you still trying to establish a connection to the Shattucks? Unfortunately, I can not find the documentation at this moment but I was thinking I had read that Mrs. Job Shattuck was Prudence's sister.
I live about 25 miles from Groton, MA, and have visited their public library. They have an excellent local history section. If you are still trying to make some connections, I might be able to help you. Please contact me at email@example.com
. Please be forewarned, there are a lot of Shattucks around this area!