Old posting you may have figured this out, I can only help with a bit.
George Ruddell's daughter Elizabeth Married my grand father Thomas WAGNON, not wagner, waggoner etc, are all common mis-spellings, however, when Thomas arrived in Washington Co AR he used the spelling of Wagnon.
I descend from Thomas's son Mashall P Wagnon.
Elizabeth did indeed receive a portion of land in MO, from her father's estate as she sells this land to her son Thomas Wagnon Jr, for $50 dollars, didn't say how much land. George Ruddell is mentioned on this deed and Elizabeth a legal heir.
Anyway just wanted you to know that the surname is WAGNON.