"he died in Texarkana." - Texarkana AR, Texarkana TX???
It is my recollection that the Waddells from NE Arkansas came from Virginia. They were prominent educators, establishing/teaching schools. I think one of the men was heavily involved in church - a Pastor or equal station.
It has been a very long time since I looked them up I think their information is on an older computer - not this current one.