In the 1800s authentic Lancashire catch-as-catch-can wrestling throws like the one from this video usually decided contests. When someone asks me what was the most significant catch wrestling move the wrestlers from that era used, a signature move of historical catch, without any doubt and regardless whether the wrestlers are on their feet or on the mat, it was a CROTCH-HOLD, literally any variation which includes CROTCH-HOLD, because it is through this particular hold the "flipping or rolling action" (rotational action is a core of Lancashire catch wrestling) which leads to an instant shoulders-touch (the only way to win in Lancashire catch wrestling) is achievable the easiest and quickest away. So to speak the whole science of the proper Lancashire catch wrestling was to ACHIEVE ON YOUR OPPONENT SOME KIND OF CROTCH-HOLD and having this ADVANTAGE try to turn him onto his back!
Crotch-Hold Bodyslam in amateur wrestling, California, USA. In Lancashire catch-as-catch-can style the match would have been over after this throw, since both shoulders of the defensive wrestler touched the ground at the same time.
Half-Nelson and Crotch by Frank Gotch.
Thanks for this fascinating article