You need to return to your original query and post some dates for any of these people in order that some sort of a timeline can be established. Also, have you already located them in Letcher Co., KY on any of the census records that would be available for them?
Marriage records are generally speaking found in different numbers of Marriage Books in any county covering different time periods. One first checks with the Marriage Index in the courthouse to locate the name and get the book & page reference and go from there. Another method is to check on line under Letcher Co. to see if any marriage records are already posted as a link under their main website.
Joyce Taylor Collins
La Palma, CA