Sorry, I don't have any information on Mary Terry other than she married Albert Crabtree. I received most of my information on Mary from the Ancestry.com paid subscription service (which I don't have anymore). I received some information on Elizabeth through Ancestry.com and some from other researchers. This is what I have for Elizabeth -

1. Census 1860 - listed at age 9, with father Jesse Lay, age 46, and grand parents John Lay, age 70, and Rachel Lay, age 71; Campbell Co., Tennessee.
2. Census 1880 - Listed age 28, with daughters Rebecca, age 9, Sally, age 7, and infant child age 2 months no name. Last name listed as Lay for her self and children.
***** This entry is directly below entry for Marion Terry, age 35, wife Patsie, age 34, and sons Elijah, age 12, James E., age 10, William, age 8, John, age 6, Charley, age 1, and step daughters - Retely, age 14, China, age 12, and Katie J., age 9; Campbell Co., Tennessee.
3. Marriage records show marriage for Marion Terry and Elizabeth Lay in 1875; Tennessee.
4. Census 1900 - Listed at age 48, as divorced, with sons Ewel, age 20, Laransy, age 16, daughters Lillie, age 11, China, age 9, Hattie, age 6; Scott Co., Tennessee.

I would be happy to see any information that you have. It was very difficult to find information on Marion Terry (Crabtree).