There is rather long story to mine. I am a fan of the horror genre and thus I am a fan of HP Lovecraft. Lovecraft wrote horror stories for magazines. And he used the "universe" concept. That is all of his stories happened in the same universe and elements and characters from one story would find their way into another story. And he encouraged other authors to use these elements as well. One such element was the Necronomicon, an evil book of great power. He even had a fictitious history of the book which was so scholarly that many people took it as real. Lovecraft said it started with a some mad poet who was inspired by a nameless demon. He later fessed up and admitted that he dreamed the whole thing up. Despite that some people saw him as writing documentaries and believed the book to be real.
Later, some joker actually wrote a Necronomicon and made a small fortune by selling it to people who thought it was real. Rather than thanking a "nameless demon", he thanked "the demon Perderabo". This is where I first heard the name.
Apparently he did not dream up "Perderabo", rather it's a name of some very obsure demon. And the original myth inspired some weirdo named Alister Crowley to call himself "Perdurabo". I'm not sure if Crowley was just a bad speller or if he was trying to be a bit original. Actually, since it's an ancient Arab legend, there are probably mutiple ways to spell it in English. Just like Kaddafi, Qaddafi, etc.
Anyway, in the 90's, I would sometimes play an online game called dikimud. I played a mage and used the name Perderabo. Then I started using it for other stuff. And that's the whole story. Aren't you sorry you asked?