Ben Franklin, Nate Gorham, Alex Hamilton, Rufus King, Carroll, Adams (IIRC), why would there have been an incentive to create a monarchy if they were on the fringe? They corresponded in Europe with the thoughts about Bonnie Prince Charlie, Henry, Cardinal Duke of York, Frederick, Duke of York, William, Duke of Clarence, Edward, Duke of Kent, Prince Henry of Prussia, the duke of Gloucester - it seems more that they went the republican route since none of the parties they wanted were interested in upping over the Atlantic from their cushy existences in Europe