The World Wide Fund for Nature, originally called the World Wildlife Fund (which remains the organization's legal name in the US and Canada), has always been known as the WWF. Hence, when the World Wide Wrestling Federation shortened its name to the same initialism, a lawsuit ensued. The environmental organization came out victorious, so the wrestling company had to change their name to the World Wrestling Entertainment, or WWE for short.note As a result, all references to "WWF" in older productions were censored in some way or another for many years. A later agreement now allows WWE to broadcast or stream all pre-2002 footage uncensored, but in new productions, the older "chrome" logo is now redesigned to eliminate the "F". Both agreements allow WWE to use "World Wrestling Federation".
ALSO similarly, the fact that Steve Williams was known as Dr. Death at the same time pro wrestler David Schultz was also known as Dr. Death (shortened to Dr. D. as a result). Schultz was (in)famous (and later blackballed) for the 20/20 segment where he cuffed John Stossel for calling wrestling fake.
In an absolutely bizarre coincidence, former TNA wrestler/evil security guard Murphy's real name is Michael Cole. Oddly enough, the WWE commentator uses that as a Stage Name, as his real name is Michael Coulthard.
A wrestler from the USA, Widow Maker Angel Williams, also know as Dark Angel, is often stumbled upon by Canadian and Mexican fans looking for a very different Angel Williams and Dark Angel. To fans in the USA, they are better known as Angelina Love and Sarah Stock, so there is less confusion, Dark Angel instead inspiring words about an insanely long iron man match.
The Apocalypse of UPW fame is not the same one who had a stint in Ring of Honor.
Rosa Negra of CMLL and The Black Rose Nikki Adams are of no relation to Black Rose\La Rosa Negra of WWC and Ring Warriors.
The International Wrestling Cartel has featured Matt Stryker, perhaps most famous for his uni brow, and Matt Striker, your teacher.
Is The United States Wrestling Organization Tag Team and Music City Champion Kevin Dunn, or is he that guy who does WWE's TV?
In Canada based Top Ranked Wrestling, the Explicit Content Stable unleashed the tag team known as Double Platinum, made up of Disco Fury and Vance Nevada. In Ohio Valley Wrestling, Ryan Howe found a kindred spirit in Rock Star Spud, the two forming a tag team known as...Double Platinum.
Around 2003, two wrestlers known as Luscious Latasha who also looked almost exactly alike, broke into the business. The easiest way to tell them apart was that one Luscious Latasha was nearly a foot taller than the other. The taller woman later became known as "La La".
Both SHINE and Vintage Wrestling had tag teams known as "The Buddy System" around the same time.