Hi Joe, I don't know if you already have your answer but here it is anyway.
Rev. Greenleaf Cheney in Byfield Parish, MA is not the same.Rev. was born Nov. 11, 1810 in Rowley, MA.Parents were Mark & Sarah Tenney.Mark is about the same age as your Greenleaf Cheney, and it is possible they were brothers or cousins.
If you have any other information, or want me to try to find out more, I'll look for you.I don't want to try to look further in case you already have more information.