1870 United States Federal Census
Name: Western W Cox
Birth Year: abt 1829
Age in 1870: 41
Birthplace: Kentucky
Home in 1870: West Liberty, Morgan, Kentucky
Race: White
Gender: Male
Value of real estate: View image
Post Office: West Liberty
Household Members: Name Age
Western W Cox 41 Sheriff Morgan County
Elizabeth Cox 39 Wife Keeping House
Mary B Cox 16 at Home
Jennie L Cox 4
Henry M Cox 1
Sarah Nickell 17 Domestic Servant

1890 Veterans Schedules
Veteran's Name: Western W Cox
Home in 1890 (Township, County, State): West Liberty, Morgan, Kentucky
Year enlisted: 1861
Year discharged: 1865
Rank: Private

Records seem to indicate they were married about 1850 when she was 19.
Not finding any other records about her.