The title “Whip” comes from the fox hunting world. The leader in the field is called the “Huntsman”, or the leader. Next in line is the “Whipper-In” responsible for keeping the pack in line and on task while in the hunt field. So, following the fox hunt hierarchy, the number three in succession would be the “Kennel Master”, which seems to me to be the perfect title for Mr. Clymer, a man responsible for keeping all of the hounds on the plantation.