I haven't much to offer.The YOCUM surname came up during my research on the MARTIN family of Estill & Powell Cos., KY.The MARTIN family connect to the WILLOUGHBY family in the same location and then, to YOCUM.
I've identified ELLEN YOCUM b. 1842 as a dau. of John & Mary [Hodson] Yocum.Harriet b. 1846 is still unaccounted for.
Don't go to any trouble - I'm sure if I continue to dig in the Internet garden, I'll come up with interesting stuff.