Some alleged ruling family insider sources claim it goes back ~80,000 years, to ice age civilizations and beyond.
There are written accounts from 2,000 BC where people in ancient Europe lament that somebody is poisoning their river and kidnapping their children, so at least 4,000 years.
There's a series called Hunting Hitler that looks at the evidence of Nazis and possibly Hitler making it to South America.
Nope, Ghislaine Maxwell was the first.
Did you expect everything to be rational and straightforward in a decades-long information war?