Who was Sylvester?

Question

I know do you?

Answer 1

These are the ones I could think of-hopefully one is the one you are thinking of:

James Joseph Sylvester 1814 - 1897 - discovered the discriminant of a cubic equation and first used the name 'discriminant' for equations of higher order.

Pope Sylvester I, according to legend is the man who healed from leprosy and baptized the Roman Emperor Constantine the Great.
Sylvester
Born: 9-6-1947 Died: 12-16-1988 of A.I.D.S. at the age of 41.
Born Sylvester James on September 6, 1947 in Los Angeles, California. He was raised by his grandmother, blues singer Julia Morgan. Having moved to San Francisco in 1967, James joined "The Cockettes," an androgynous theatrical group with whom he made his debut on New Year's Eve 1970. He subsequently pursed a career as "Ruby Blue" before putting together "The Hot Band" with James Q. Smith (guitar), Bobby Blood (trumpet), Chris Mostert (saxophone), Kerry Hatch (bass) and Travis Fullerton (drums).
Two albums for Blue Thumb Records were released in 1973. "Scratch My Flower" and "Bazaar" both gave him a platform for his powerhouse vocals but the musical style lacked commercial appeal. His voice coupled with an outrageous live show, secured James' local reputation, but his "discovery" by former Motown Records producer Harvey Fuqua led to a much wider audience.

Answer 2

He's the Bad Ole Puddy Tat that tries to eat Tweety all the time.