Hi John- I haven't done any family research in awhile. The information I got for Charles Wesley Whitis that has his death listed as 1857 came from: http://members.tripod.com/~verlee/whitis.htmhttp://members.tripod.com/~verlee/whitis.htm
It could very well be a mix up and the 1877 date you have may be correct.
As to how I'm related to Charles Wesley and the TX Whitis clan....I am descended through Charles' brother John Whitis. John Whitis - Hiram C Whitis (named after John's other brother)- Evan Whitis - Romeo Whitis - Lee Whitis - Linda Lee Whitis..my mom.So I guess Charles would be my Great Uncle times 4. :)
Ou line of the Whitis family stayed in and around Pulaski County, KY.