The Queen's Gambit Accepted the Bogulyubov Variation.
I suppose we can be thankful that the chess player
'Octavio Figueira Trompowsky de Almeida' only uses
Trompowsky on his opening books, especially if
'Fyodor Ivanovich Dus Chotimirsky' happened upon a variation.
Then of course there is:
The 'Miles' Defence. (that is pretty long)
The Chess Book with the longest title is:
The Book of Chess: Containing the Rudiments of the Game,
and Elementary Analyses of the Most Popular Openings. Exemplified
in Games Actually Played by the Greatest Masters; Including Staunton's
Analysis of the King's and Queen's Gambits, Numerous Positions.
by Hyacinth R Agnel (1799-1871)
This is not a joke, the code is ISBN: 9781148456034