August 1958: Supergirl first appears, creatd by Otto Binder and Al Plastino.

March 1968: Roy Thomas and Gene Colan create Ms. Marvel, who is basically a Marvel hero with most of the powers of Superman.

And then, in 1962, Supergirl took the secret identity “Linda Lee Danvers.”

There are only 270 people in the US with the last name Danvers.

What is the connection?