Lewis, Taylor, Nease, Hedrick, Ellison..

I am looking for any info on a 'Dialtha' Lewis born to Richard and Polly lewis, 1836. They resided in Cocke county in 1850. Dialtha is the mother of William C. Baxter, Mary Ann Taylor and Daniel Taylor. Some folks feel that the daughter, Mary, of John Leith Lewis is the mother of these children; but I am exploring this possibility on the Richard Lewis side. Mary Ann Taylor married Reuben Nease in 1879, Cocke County, Tennessee. I believe they had a daughter, Ellie, Ella, or Ellen in about 1884. This 'Ellen' had a daughter named Mae in 1902, supposedly, with a Carl Brooks, out of wedlock. This child was adopted by Minnie and Charles Ellison in about 1903. There is little to no info on Dialtha and Ellen, my main interest. If anyone out there has anything to help me learn about these people, I would really appreciate it..