Famous human muses and their affect on the artist?

Hello, I was just doing some research and would like to know if anyone has any information on muses and their affect of their artist.

Here's a list that you can add to:

George Balanchine and Suzanne Farrell

Charlie Chaplin and Hetty Kelly

Erik and Christine (from the Phantom of the Opera)

William Morris and Jane Morris

John Ruskin and Rose La Touche (I know, an odd relationship, but muse-like nonetheless)

John Everett Millais and Effie Gray (also Sophy Gray)

Guido Contini and Claudia Nardi (from the musical "Nine")

...etc.

Thanks in advance!