Did you ever find any information regarding Moses Allen or Lucinda Wilson's birth parents? I know John Wilson is Lucinda's father, but I have no information regarding her mother. I also have no clue as to who John Wilson's parents are. Moses and Lucinda are my maternal great-great-great grandparents, their daughter, Flonnia/Flonnie/Florie/Flossie Allen (there are many different spellings) is my great-great grandmother. I have searched everywhere for information regarding them but have come up with nothing! I've looked at all the census records and found the same information you have. I have come to the conclusion that John Wilson died in the Civil War because on the 1870 census, Sally and George are listed under other families' households. Perhaps they were adopted into families following their father's death?
Please contact me if you have any additional information regarding the Allen & Wilson families.