Fernando Saavedra (Spain, 1849 - 1.5.1922)

This study below by Fernando Saavedra is one of the most famous. 
A lot is written about it and many lookalike studies are created.
 
In Article Book: Weltenfern by Siegfried Hornecker Chapter Six you find a good explanation.
 
The Saavedra position is one of the best known chess endgame studies. It is named after the Spanish priest Rev. Fernando Saavedra (1849–1922),
who, while living in Glasgow in the late 19th century, spotted a win in a position previously thought to have been a draw.
This is one of the most famous examples of underpromotion in chess and a rare example of a player being famous for a single move.
The long history of the study has its origins in a game played between Richard Fenton and William Potter in 1875....
 
On German and English Wikipedia there are stories about it.