Yes, that's literally what wikipedia says:

Madison is also used as a given name. It has become popular for girls in recent decades. Its rise is generally attributed to the 1984 release of the film Splash

https://en.m.wikipedia.org/wiki/Madison_(name)

There is a character named Madison 1964 film "The Incredibly Strange Creatures Who Stopped Living and Became Mixed-Up Zombies" (later shown on Mystery Science Theater 3000), but he's a boy, so I don't know if this is relevant.

Imogen is from a Shakespeare play, but it’s actually supposed to be Innogen but the first prints had a printing mistake and the name Imogen came into existence and the script with the error was reprinted for centuries. So everyone who is named Imogen is named after a typo.

James Madison was the 4th president of the United States. Just saying.

https://engaging-data.com/baby-name-visualizer/?n=madison&sex=b&data=n

Checks out.

Tiffany was similarly not used as a first name until Tiffany & Co, and particularly Breakfast at Tiffany's, the 1958 novel/1961 movie.

The "Tiffany" from Tiffany & Co was a last name, and that owner was one of a handful of Tiffany's in the world at the time of the founding.

The name "Kayleigh" was invented by Marillion in 1985

Fun fact: When Disney put that movie up on Disney+ they had to make a bunch of changes involving CGI hair because it turns out with modern picture quality you can see a quite a lot more of Daryl Hannah than they originally intended.

What about Madisynn?

What about Madison SG?