Hi, If the Martha King age 10 is the one in your line, then sorry, we have no connection. I am trying to locate Martha King b. 1857ca in AR who married 10 Jan 1878 to James McDonald in Sevier Co., AR I think Martha was an orphan but can't fin her before that marriage. She married again in 1881 and moved to Swink, Choctaw Co., OK and is buried here.
If you can document this Martha King, plaese let me know and I will cross her off my search list.