Jacob and Gross Family Trees
- Ancestry of Robert William Jacob of Fairport, NY USA.
- http://familytreemaker.genealogy.com/users/j/a/c/Robert-W-Jacob/

Jacob Family
- Ancestry of Marc Jacob, Summerville, SC USA.
- http://familytreemaker.genealogy.com/users/j/a/c/Marc-Jacob-SC/

Jacob
- Family history of Jeffrey Alan Jacob including surnames Kuyper, DeWit and Cox.
- http://familytreemaker.genealogy.com/users/j/a/c/Jeffrey-A-Jacob/