I appear to be descended from Thomas Nighbert Sr. husband of "Polly" (Mary?) Cave, through George Thomas Nighbert (October 27, 1789-October 1, 1865)who married Nancy Albright. The rest of the line was G. T.'s son Thomas M. Nighbert (November 15, 1813-December 6, 1874) and his wife Rebecca Crandall. Then James Reed Nighbert (March 23, 1849-October 24, 1939) and his wife Malora Alice Reno. Next, James'daughter Nellie Viola Nighbert (January 15, 1885-October 11, 1941)and her husband Edward Charles Sproessig. There daughter Helen Ruth Sproessig (March 27, 1908-July 24, 1995) was my grandmother.
I am unable to help with Thomas Nighbert Sr., but I did want to help support this site as I was unaware until moments ago that it had even been started. Where did the information of Polly, Mary, or Lucy of Liverpool, England come from?
My sources are highly mixed including the LDS Familysearch.com, Ancestry.com, US Census Records, Obituaries (for most modern ancestors), and Bureau of Land Management.