Penrhyn Stanley Adamson, known as Penrhyn Stanlaws, was a cover artist and film director. Sydney Adamson, who also became an illustrator, was his older brother.

He was born in Dundee, Scotland.
A successful cover artist, he picked Anna Q. Nilsson to become one of his models. He selected female models who toured by automobile to promote Liberty Loans.

Stanlaws organized a syndicate to build the Hotel des Artistes at 1 West 67th with a large penthouse studio. He also planned a resort in Port Washington on Long Island but it was never built.

He was a fan of the looks of Madge Bellamy.