Family Trees on Ancestry.com having your family:
1. From "Angela Davis", lives in Knoxville, TN. This is probably the person you were attempting to contact. You can contact her via this page, just click on her name. This is probably the most current of her family tree's posted online:http://trees.ancestry.com/tree/11019208/person/-542493593?ss...
Here is another one:http://trees.ancestry.com/tree/2869950/person/-1808616402?ss...
She shows your grandfather marriage to Violet Elizabeth Smith in Campbell County, TN in 1901. Then he marries Lillie Donna Gross in 1912, in Anderson County.
You show Henry Hardy Poore, born 1879. You show Lilly Donna Gross, death 1916, but show her as being the mother of Arthur Leon Poore, born 1916; Leonard Poore, born 1922; and Raymond Clyde Poore, born 1938. You show Henry having died 1922; if so, he couldn't be the father of Raymond either.
There are many records showing Henry Poore married Lillie Gross on 16 Nov 1912 in Anderson Co.
I don't know where your information came from; but, I would "guess" Lily Donna Wilson and Donna Lily Gross was the same person. In any event, contact Angela Davis through her family tree above.