Unfortunately, I don't have access to a marriage index for Nelson Co., VA, covering marriages after 1850.

I would suggest that you try to obtain a copy of their marriage certificate. They were probaby married between 1865 & 1870. There should be a record in Nelson County.

Nelson County Clerk
Courthouse
Lovingston, VA 22949
(434) 263-4245

There is also a gentleman at the Nelson County Genweb page offering to do lookups in the marriage register: 1854-1926.

http://www.rootsweb.com/~vanelson/lookups.html