I'm interested in following up relationships with you. Is your Samuel Logan, born 1877, related to the Samuel Logan Alexander, born about 1831 in Roane Co. TN? If so, you have two very interesting (nothing bad that I know) ancestors.
The earlier Samuel Logan himself ended up in Greene or Webster Co. MO, but apparently at least one nephew, James Thomas, moved his family to Hamilton Co. after the Civil War. Is this your line?