The 1900 Census of Civil District 1, McMinn County, TN shows Mira Doss, born in November 1854, unmarried, living with her widowed mother Jane, sister Nancy and brother John.
T.J. Richardson lived in and around District 1 of McMinn County, and just over the border in Monroe County most of his later life. It is likely this is the same Elmira Doss he married after his 1st wifes death in 1900.