Maybe this will help. The question is does it prove or disprove the relationship?
The site also shows the couple with a daughter Malina Hellen Culp.
Jackson Culp mentioned in the record of Thomas W. Culp
Name Jackson Culp
Gender Male
Wife Elizabeth Quarles
Son Thomas W. Culp
Other information in the record of Thomas W. Culp from Kentucky Births and Christenings
Name Thomas W. Culp
Gender Male
Birth Date 23 Aug 1852
Birthplace Marshall Co., Kentucky
Father's Name Jackson Culp
Mother's Name Elizabeth Quarles
Citing this Record
"Kentucky Births and Christenings, 1839-1960," database, FamilySearch (
https://familysearch.org/ark:/61903/1:1:FWJS-2VQ : accessed 20 August 2015), Jackson Culp in entry for Thomas W. Culp, 23 Aug 1852; citing Marshall Co., Kentucky, reference 2:1HT073G; FHL microfilm 216,833.
Wm. J. Culp mentioned in the record of Wm. J. Culp and Elizabeth Quarles
Name Wm. J. Culp
Spouse's Name Elizabeth Quarles
Event Date 06 Nov 1851
Event Place Marshall, Kentucky
Marital Status Single
Spouse's Marital Status Single
Citing this Record
"Kentucky Marriages, 1785-1979," database, FamilySearch (
https://familysearch.org/ark:/61903/1:1:FWY4-JYD : accessed 20 August 2015), Wm. J. Culp and Elizabeth Quarles, 06 Nov 1851; citing Marshall, Kentucky, reference it 1 n 474; FHL microfilm 321,353.