I know this is a very old post but I am researching some of the same Elder's. Some of my info is a little different.

My Gr Grandmother was Jane Walker b 23 Jan 1882 in Macon MO. d. 30 Jul 1937 in Billings MT. Her parents were Melissa A Elder b 1851 in Macon MO and Charles G Walker b 1850.

Melissa's parents were Elijah Elder b. 20 Jul 1811 TN d. 1886 Macon MO and Jane Craig b 1809 d. 1871. Elijah did have a second wife, Mary Jane Surber Walker the wd mother of his son in law Charles Walker.

According to the History of Macon Co. MO his parents were Jacob Elder and Nancy Collier of Kentucky.
I am not sure but I think Jacob's parents were Samuel B Elder and Hannah.
From the reply to this post I was wondering if Diane Weaver was available to help?
Any info would be greatly appreciated.
Kristine