Great detective work. The poster above posted in January of this year. I don't know if he is still interested in knowing the answer to his question, but here is what I do on occasion: I go to both the Lexington and VMI libraries to research info on the old newspapers. There is at least one newspaper that covers Lexington that is on file at both libraries covering that time period. I don't mind checking the next time I'm there, but since this poster hasn't responded to my posts to him, than I don't know if anyone is even interested. If there is a person interested in finding an obit for Erastus, please let me know.
BTW, is Erastus the brother of George, and is George the husband of a Littrell? I think I've done corresponding reserach on this family. Also, saw a tax record entry on Erastus while working on another line in the early 1800's.