I believe that the A.B. McMichael that you refer to is Absalom Bonham McMichael born 31 Aug 1844 in Coffee Co. TN. He was the son of Wm. McMichael and Sophronia Ross. He was named after his great grandfather Absalom Bonham (on his mother's side). This Absalom B. McMichael moved to Sebastian Co., AR with some of his mother's people and bought 40 acres of land in Sebastian Co., Ark on 25 May 1885. Sorry, I have nothing on his wife or her family. I do have more on the McMichaels and Ross families if you think this is the right A.B. McMichael. Best wishes, Jack