Louis Stiennon, Herstal 1906
This inventor is interesting not only because he patented a single trigger ( one of the toughest problems ever encountered by SxS inventors), but, because he was a SxS inventor in Belgium in 1906, then appears in New Haven Connecticut, USA in 1932, working for WINCHESTER, and still inventing SxSs. Maybe someone could cross reference Stiennon in Belguim, and I will do an all out search in Connecticut, including contacting Winchester. I'll bet there is some history there for SxS collectors.
Louis Stiennon, USA 1932.