Oh boy, have you ever gotten on a roller coaster ride with this message! You will probably get tons of replies as there are Caldwell researchers all over the map and they indeed mix in with Ritchie/Richey.
I have some limited information I can send you ...but I was just on my way out the door to do errands. I will contact you one day next week and send you what I have. You may have already gotten replies which are more advanced than mine...but we sister genealogists like to help each other out!
I will contact you next week.