LuAnn: Yes, I agree that Marmaduke's son is almost certainly Edmond H Moye. I have retained the name Edward, which was from my original source, just for the record.
I also agree with the 1823 date for Polly Carlton's marriage to Marmaduke as that was the date of the marriage bond. Once again, my original source gave 1805 and I have retained it merely for the record. In that case, Elijah will have been the child of Marmaduke's first wife.