Hanson lists a Richard Wilson, London 1738-1752
and a Richard and William Wilson & Company from 1757-1760. The dates are posting the years the trader supplied the HBC.
There was a Robert Wheeler of Birmingham, who made fowlers, muskets and trade guns as well. His manufacturing dates are late for F&I period guns.
The Northwest fusil or Hudson Bay fuke in its final form as we all know it today is too late for the F&I era. The Wilson gun that some factors sell on the market today is a pretty good representation of the {Wilson Trade Gun] was available through those years. The barrel is about 4" too short, BTW. It is a fax of the French guns offered at the same time. Kind of an English knock off of the French Fusil Fin of the same time period now known as a Type D. See Hamilton's O'Conner gun on page 78 and 79. It all gets very confusing with all the various makes and models that were offered through the trade over the years. The term Northwest fusil was used before the popular understanding of a Hudson Bay fusil was developed. The triangular boxy butt, cast serpent side plate, sitting fox stamped, big tg bow, flat sheet brass nailed on BP trade gun was not available until around 1780 or so, by the same London makers that were making the french fowler type knock offs.