Your data re Castine/Penobscot research is a huge help to me(am researching the Mansells of Castine). Castine's Vital Records seem to have been purged of all references between the alphabetical listings from L to O, it is like butting a head against a stone wall.
My father's cousin was John Farnham of Newport/Carmel -- he was the son of John, I believe, who married my great aunt, Winifred Goodwin of Stetson/Carmel. John was a funeral director in Newport, recently passed away but had done extensive research on his Farnham history. His widow is still in Newport, you might wish to contact her. I have some of his early research, if you cannot get more recent data send me an address and I will send a copy to you.