Several sites list the parents of Abigail Newcomb, who married Joseph B O'Cain & Captain Reuben Newcomb as Levi Kimball & Abigail Kimball.
However, their daughter Abigail Kimball appears to have married William Hopkins.
So for now, I'm not making that parent connection, but wanted to document it here in case someone gathers additional information. If we know that these parents are incorrect, let me know and I can make a note on the profile so it is not confused in the future.