The legendary Attila the Hun.
Cause of death: Bled to death
When it happened: 453 AD
Where it happened: Hunnic Empire
It's true. Attila the Hun, the great ruler of the Huns, is also said to have died for sexual reasons. Legend has it, after Attila married the beautiful Ildico, he actually choked to death, stunned over how beautiful his new wife looked. Other stories suggest that even Attila the Hun, who was probably a sucker for S&M, had his nose broken by his wifey in the middle of some rough intercourse. He then bled to death.