James M. Neff 1860(62)- 1912 m sarah neff (2nd wife) died Grand Rapids,MI- born cowanshannock, PA
Martin Neff abt 1821-1864(65) m elizabeth d. jamison died in civil war - PA volunteers 103rd Inf. Co.G
John Neff 1785-1850? m sarah pierce notverified but listed in Edmund West collection at BYU(LDS)
Abram Neff ? m Mary Neff not veried - BYU collection again
it seems the last two were from personal clippings taken of Lancaster Co., PA records by Edmund West of Utah in his own genealogical search and collected quite a few names not necessarily his own kin that were in the same records as his own kin - so these last two I cannot verify
I think he was From LDS and subsequently donated his research to BYU on his death.