The Tombstone...
 

According to Wikipedia (yeah, really reliable source there, I know), the name "Tombstone" for the reverse Piledriver came before The Undertaker. My question is, is this just false and Taker was the first to use it by the "Tombstone" name? If not, who was the first to use it, and how long before Taker did they use the name?

No one used the name Tombstone before The Deadman , though this move existed but it was Taker who used this name to go wid his Undertaker persona.

Im pretty sure the reason taker used it is because it is the Tombstone, not the other way around. I remember someone using it as the Tombstone in the NWA...

I know for a fact Dynamite Kid used Tombstone's way before the Undertaker debuted. I can't remember what it was referred to as but I've got a feeling it was called a Tombstone Piledriver.

Found two old matches with Tiger Mask #1 from '83 on Daily Motion where they hit Tombstones on each other but I couldn't really make out if the Japanese commentators actually say Tombstone or not.

I've heard before that Don Muraco was first to use the move but I can't find any evidence that he called it anything other than a reverse piledriver.

ToombaStonahhhhhhhh Pyro Drivahhhhh!!!

Come on, Kane first did the Tombstone to Katie Vick after he tapped dat dead ho.

I thought Kane used the Wheelbarrow Suplex around that time?

That came after. She was wriggling a little bit so she finished her off with the Tombstone. Then he wheelbarrowed that slut to kingdom come.