I did a quick search in the census records for Reuben Wilson. There's a good chance he is the son of Alexander L. and Martha Jennie Wilson, whom I located on the 1910 federal census in Self, Blount, Alabama (Sheet 6B, lines 83-90) and again on the 1920 census in Selfs, Blount, Alabama. His parents were born in Alabama (Alex circa 1877 and Jennie circa 1880) and married circa 1898.
Using that information, I then searchd for Alexander Wilson in the census records. He may well be the son of William and Arinda C. Wilson, whom I located on the 1880 federal census in Blount, Alabama -- ages 31 and 26 respectively (him born TN, her born AL) with a son Alexander age 4.
That's as far as I took it, as it's all the time I have. But this gives you a basis at least for Rubin V. Wilson. Good luck!