Evans Gambit.
This opening was named after the Welsh sea captain, William Davies Evans, the first player known to have played it. He pulled this shenanigan for the first time in 1827 during his game against an Irish chess master named Alexander McDonnell in London. Or so that was what Wikipedia said.
In his heyday, this opening was pretty popular among top players, with the legendary Dutch Grandmaster Paul van der Sterren describing the Evans Gambit as 'unreal' and 'fairylike'. Hell, even the prominent players in history like Adolf Anderssen and Paul Morphy took it up and won some of their most important games in their lives with this opening. Unfortunately, unlike the old classical openings, such as the Italian or Ruy Lopez, the popularity of the Evans Gambit declined over time.
