Origin story\n\n It's hard to know exactly when Friday the 13th became thought of as unlucky, but👏 it likely comes from the Christian religion. For example, in the Bible, Judas a person who is said to have👏 betrayed Jesus was the 13th guest at the Last Supper. Also in the Bible, many unfortunate things happened on Fridays.

Not really. Jason Voorhees was more likely inspired by several disturbing incidents/killers than one specific one. In fact, (ANCIENT SPOILER👏 ALERT) Jason's mother Pamela was the actual killer in the first film.