Did you see 1910 Cottle-Paducah-0066-Image 3 where Moses enumerated as "Marris"? Perhaps Moses chose to honor his father by adopting the name "Marion"? Of course I don't know that Marion was his father's middle name, simply supposing! You may have to do some "leg work" to find actual proof of lineage? However, if you follow the family's travels from Milam, Hopkins, Hunt, to Cottle that'll provide opportunities for additional research.