According to James Avery Finger, IV book "The Southern Finger Family: Peter Finger's Pumpking Patch 1730 - 1966", Jacob Finger was born circa 1790 in in Lincoln County and died after 1840. (I think this is a typo, becasuse further down he shows Jacob was in the 1850 census.)Susan Troutman was born 1794 in NC and died after 1860 in Catawaba County, NC at the age of 66. In the 1850 NC Census Jacob is listed as living in both Lincoln County and Catawaba County.
James Avery doesn't have exact dates, but his research is very thorough. I beleive the book is in the Lincoln County Public Library Genealogy Room.I also beleive copies are available for purchase.