Just a note so that many of you can fix your records...
I just found a number of posted family trees on ancestry.com that list one Isaac Lufkin with two wives: Lucy Forbush and Sarah/Sally Herrick Burnham. There were TWO Isaac Lufkins born in 1799/1800. One of them married Lucy Forbush and lived/died in the Templeton MA area. The other, my ancestor, lived in, was married (to Sarah Burnham) in, and died (in Aug 1880) in Gloucester. He's buried in the Sumner Street Cemetery in West Gloucester with his wife Sarah and daughter Judith (Lufkin) Currier and with his son-in-law Frank Bray, husband of Ora B/Arabella/Orrabell and their son Oscar.
You can verify there were two Isaacs through the 1850, 1860, 1870, and 1880 US Census records.
I'm still working on the parentage of "my" Isaac, so I don't know much else about either Isaac at this time. But please feel free to email me if you have any questions.
Sue (Currier) Scanlon