Hi Theresa.
I'm assuming you have an account with Ancestry.com, so you should be able to get there through the search function.
Just go to "Search", then enter Medie Summers Bogle, and put in date of birth 1838 in Tennessee. You can scroll down until you find her. There is also an entry for "Jim" Bogle. Is Medie a nickname? You may be able to find her under Medie Summers in an earlier census before she married Jim Bogle. If Medie is a nickname, try entering her given name. You can also search using Sterlie Bogle. He will probably show up on the 1920, and 1910 US Censuses. That may also give you some more clues, such as siblings, Father's date and place of birth, etc.

Now I want to ask where your Robinson line comes from. I also have some Robinsons in my family tree on my mother's side.
Thanks!
Kirk