It is also sometimes referred to as the Kostić Gambit after the Serbian grandmasterBorislav Kostić, who played it in the early 20th century.
Wilhelm Steinitz made the first known mention of this line, noting it in 1895 in the Addenda to his Modern Chess Instructor, Part II. The earliest game with the opening on chessgames.com, Dunlop–Hicks, New Zealand Championship, dates from 1911. Another early game, mentioned by Bill Wall, is Muhlock–Kostić, Cologne, 1912.
The Blackburne Shilling Gambit is the name facetiously given to a dubious chess opening, derived from an offshoot of the Italian Game, that begins:
It is also sometimes referred to as the Kostić Gambit after the Serbian grandmaster Borislav Kostić, who played it in the early 20th century.
Wilhelm Steinitz made the first known mention of this line, noting it in 1895 in the Addenda to his Modern Chess Instructor, Part II. The earliest game with the opening on chessgames.com, Dunlop–Hicks, New Zealand Championship, dates from 1911. Another early game, mentioned by Bill Wall, is Muhlock–Kostić, Cologne, 1912.
Sources:
Blackburne-Shilling Gambit
https://en.wikipedia.org/wiki/Italian_Game,_Blackburne_Shilling_Gambit
John Boyd Dunlop vs. E Hicks game, New Zealand, 1911
http://www.chessgames.com/perl/chessgame?gid=1320024
Muhlock vs. Borislav Kostic game, Koln, 1911
http://www.chessgames.com/perl/chessgame?gid=1243016