I don't think this is obscure, but it's at least spicy.
Masochism was named for an Austrian fellow named Leopold Von Sacher-Masoch. He was journalist and writer and all, but also a masochist with a thing for strong ladies in furs (He indeed wrote a book titled Venus In Furs). He once entered a 6 month slave contract with one of these lady types, adopting the name Gregor.
Contract between Mrs Fanny von Pistor and Leopold von Sacher-Masoch
On his word of honour, Mr Leopold von Sacher-Masoch undertakes to be the slave of Mrs von Pistor, and to carry out all her wishes for a period of six months.
On her behalf, Mrs von Pistor shall not demand anything of him that would dishonor him in any way (as a man or as a citizen). Moreover, she shall allow him six hours a day for his personal work, and shall never look at his letters and writings. On the occurrence of any misdemeanor or negligence or act of lèse majesté, the mistress (Fanny von Pistor) may punish her slave (Leopold von Sacher-Masoch) in whatever manner she pleases. In short, the subject shall obey his sovereign with complete servility and shall greet any benevolence on her part as a precious gift; he shall not lay claim to her love nor to any right to be her lover. On her behalf, Fanny von Pistor undertakes to wear furs as often as possible, especially when she is behaving cruelly.
At the end of the six months, this period of enslavement shall be considered by both parties as not having occurred, and they shall make no serious allusion to it. Everything that happened is to be forgotten, and the previous loving relationship restored.
These six months need not run consecutively: they make be subject to interruptions beginning and ending according to the whims of the sovereign lady.
We, the undersigned, confirm this contract,
FANNY PISTOR BAGANOW
LEOPOLD, KNIGHT OF SACHER-MASOCH
?And that's all he wrote.
Looks like he tried to live out a lot of fantasies from his books. Cost the guys some marriages.