On the 1860 slave schedules Minehaha Plantation was owned by Robert King; he had 101 slaves.
Mt. Ararat was owned by "Est Jas Andrews" widow and 2 minors.
The handwriting on these schedules was very flowery and some are hard to read. The entry for Mt. Ararat is not clear. It is image 27 of 61 if you look at the schedule using Ancestry.com.