I notice that this Jacob is recorded as dead in 1822, but no information given on where or any children.
There is a will of Jacob Longenecker in Greebrier County, Virginia in 1822. Wife Sybille, several daughters and two sons: Abraham and David. I suspect this David is equal to David who married to Mary "Polly" Spahr in Monroe County, Virginia in 1811. This Jacob and Sybille is also mentioned regarding document telling about land which was seld in Shenandoah County, Virginia.
So if there is a proof that this Jacob died in 1822 - I guess we are likely talking about the same persons. And it also seems that one of Jacob's sisters dies in Shenandoah, Virginia in 1809 - Elizabeth.
Sincerely
Eiliv
