Your Milton Bouldin sounds like mine. Born in KY in 1849 and married to Mariah. I don't have any information about who their parents are. Have you gathered any? I found them on the Vernon Co. MO 1900 census with 3 children - Lillie born in IN in 1881, William born in IN in 1888 and Letha born in MO in 1896. Lillie died giving birth to my grandmother in 1900 in Nevada, MO. I also have other records of a Lucille E. who was another sibling. Not sure of her birth date. My grandmother came to CA so it is possible that is where Milton ended up. Have no confirmation of this however.