I too am just working on the McWhorter family, I have a Mary McWhorter who married a Cornett, was widowed and married either a John or Jesse Evans. But, the families connected in this lineage use the name Champness for first names of boys. So I quickly searched to see if the name has been used for a last name, and it has... so that my be a clue. So you might want to include Champman in there. Let me know if you have anything solid to add to my Mary McWhorter.