Hi....I came across your post while trying to help a friend research her Genealogy....I believe that your Grandfather John Vance was the Brother of my friend Donna's Grandmother Tilda Vance Marcum....IF I am correct from my research , I have traced the family back as follows:
Frances Marion Vance (1871 - Unknown)
Born in Logan, West Virginia, USA on 1871 to Andrew Jackson Vance and Rebecca Hensley. Frances Marion Vance married Rebecca Tiller.
Daughter **Tilda Vance Marcum (1894-1977) was my friend's Grandmother....Tilda Vance Marcum, born 4 July 1894, died March 1977 in Mount Gay,Logan, West Virginia. Tilda Vance Marcum was the daughter of Marion and Rebecca Vance. She was the wife of Moses Mose Marcum, who was the son of Andrew Jackson Marcum and Sarah J Vance.**
Andrew Jackson Vance (1855 - unknown)
Born in West Virginia, USA on 1855 to Meekin Vance and Pheobe Workman. Andrew Jackson married Rebecca Hensley and had 12 children.
Meekin Vance (1814 - 1880)
Born in Logan on 1814 to John Vance and Mary Simms. Meekin married Pheobe Workman and had 12 children. He passed away on 1880 in Logan, West Virginia, USA.
** John Vance (1790 - 1865)
Born in North Carolina, USA on 1790 to Abner Vance and Susannah Howard. John married Mary Simms and had 2 children. John married Hannah Rader and had 10 children. He passed away on 1865 in Logan.
**His Children : Meekin Vance , Paris J Vance , Tabitha Vance , Phillip Vance , Rachel Vance , William Vance , Simon Vance , Susannah Vance , Nancy Vance(Hatfield) , Levi Vance , Elizabeth Vance , Sena Vance
** With Meekin Vance , I did see 1 source stating that his father was a Richard Vance instead of John Vance and his Mother was the same(Mary Simms) , that might of just been an error by another researcher , but I'm not sure.
Abner Vance (1750-1819)
Born in North Carolina and married Susannah Howard.
I hope this helps you continue in your research....Please contact me if you want to exchange information or have further questions....Regards ,