I can add information to your posting, but not going further back.You listed children of Joseph William Denham Welborn and Rose (Rosa) Anne Green, beginning actually, with the 5th child of the marriage.There were four others prior to Valley (Vallie).Dora b. 1891, Robert F. b. 1893, Alonzo b. 1897 and Denham D. b. 1899.The information I have was taken from the 1910 census of Jasper Co., MS, (Page 15, E.D. 19).The 7th child, Martha Elva, is our grandmother, b. March 27, 1908 (you listed March 22 as birthdate).It was stated in the census that Luanza (Louanzie) Sims was living with Joseph and Rosa in 1910.It was indeed Joseph's mother.She was age 77 in 1910.We are trying to get info from Martha (still living in Florida) regarding the family, but much of it she does not recall.She states she was never close to her father-in-law, therefore cannot give details regarding the move to Florida.Hope this info helps.Would like to get details on the info you have given (sources).Email if you wish.