I do not know the names of the families that raised the two boys.
In 2004 I had a telephone conversation with Tricia DeMoss who gave me the information I have for Mary Elizabeth Burcham. She said that Mary Elizabeth Burcham married George Riley Davis about 1889 in Missouri. George was born April 1861 in Hardin Co., TN. George and Mary had eight children. Mary Elizabeth Burcham's parents were Lenonard McAgers and Tempa Catherine Wilson Burcham. Tempa married John Amer after Leonard McAgers died in 1905. She also mentioned a Martha Jane Burcham but my notes are a little confusing and I'm not sure if this was Mary's mother. I haven't pursued this line as it isn't mine directly. Tricia said Tempa was in the household of Absolum and Mary in the 1920 US Census. I have not looked at that census report.
Perhaps Alex and Mary will hold some information for me.
Thanks for the clues.
Elaine