I purchased a book about 4 years ago by Scott Teal, Presenting the Publicovers. Has your Jeffrey marrying Ann Melinda Zwicker 2/25/1865. Has his Publicover ancestry back to 1600.
Check the messages on this list by him. One has his email in 2002 so don't know if its still good in case you want to purchase it.
Jim in Nashua, NH