If your John A. Weatherhead married a woman from Brockville it is very likely that he was from my Weatherhead family, because they settled at Augusta, which was nearby. What is the name of the woman he married? However, there was another Weatherhead family in the area who descend from Loyalist John Weatherhead who I believe was from Long Island New York. I don't know what his relationship was to the Barbados Weatherheads. The name is so unusual that I think they must have been related. I know that there were Weatherheads on Long Island who were Loyalists and that a John Weatherhead forfeited his estate in New York because he was a Loyalist. I will see what else I can find on John Weatherhead.