I found a marriage for a George W. Vance and Elizabeth Murdock, February 2, 1832 in Fayette County (I presume this is Kentucky) in Early American Marriages: Virginia to 1850, by Dodd, Jordan R, et. al.,Bountiful, UT: Precision Indexing Publishers, 19xx.
It is possible the Elizabeth belongs to my line, but I have not seen the actual record and cannot be certain.
My line comes from Virginia, but my ancestor owned property in Maryland and his brother lived there and had many children.
I am willing to share information if you would like to contact me.