Beau Brummell was a real figure in history. You can read about his interesting and influential life here.
In time, though his name became synonymous with that of a well-dressed, fastidious dandy. He has been played on film and TV by John Barrymore, Barry Morse, Peter Cushing and Stewart Granger, among others. In the sixties, there was even a pop group called The Beau Brummells. Nina Albright provided the art for this costumed hero version who appeared in several short run comic books.