https://en.wikipedia.org/wiki/Aerial_(skateboarding) says "The 720, two full mid-air rotations, is one of the rarest tricks in skateboarding. It was first done by Tony Hawk in 1985, and it wasn't something he planned to do."
(Which is presumably "the first recorded" but I'm guessing if someone had done it, they'd have been shouting about it and -probably- the only kind of person who could pull it off would be a pro skater anyway?)