I research a group migration (which included at least 22 Teters) that went from Hardy CO VA to St Clair Co IL in 1797. Although I do not fully understand the connection, I can see persons in that group, and definitely persons coming from the same extended family in PA and/or VA, as having some sort of relationship with Ross CO OH. One reason is that my group arrived in IL to encounter a terrible epidemic that killed half their group and some of the survivors immediately returned east with some of them (documented) settling in Ross CO OH. Another reason is that (undocumented Internet) there appears to have been extensive migration from Hardy CO VA to Ross CO OH in 1802, possibly a group migration. Just now I fooled around a bit on LDS and found that Thomas Teter b Ross CO OH 2-26-1851 was s/o John W Teter and Susan Collister. Looking also possible naming patterns, there is a Thomas E Teter b 1837 Ross CO m to Mary Rockhold and before that a Thomas E Teter b 1810 Ross CO s/o John Teter and Mary Hare (John's father is not identified). Looking then at Hare I found a Jacob Hare b 8-21-1768 Hare's Valley, Huntingdon CO PA d 4-8-1862 Ross CO OH whose father was b ca 1740 KY and d 1820 Ross CO OH. One possible scenario might be father and son both named Jacob Hare, who in 1802 would have been age 62 and 34, traveling to Ross CO OH with family members, among them perhaps the grandfather of your Thomas Teter b Ross CO 1851. You might try looking at parallel lines using surnames of the mothers: Hare, Collister, and Rockhold. You can bet that when your Teter line went to Ross CO they went with others; tracing some of those other names may find you your Teter.