Who was the guy in Rocky's picture?

What was the name of the boxer in the picture over Rocky Balboa's fireplace in his apartment? (From the 1976 original)

Thanks!

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I haven't seen the movie in ages, but I would assume it's gotta be Rocky Marciano, Heavyweight Champ from September 1952 through April 1956, who retired undefeated.

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"Film is a disease. When it infects your bloodstream it takes over as the number one hormone. It bosses the enzymes, directs the pineal gland, plays Iago to your psyche. As with heroin, the antidote to Film is more Film." - Frank Capra

It's definitely Marciano.

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It's what you learn after you know it all that counts. - John Wooden
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I just watched Rocky V the other day and he had a cufflink necklace of a boxing glove that was given to him by Rocky Marciano. So, that would be my guess, but Mark F already knows the answer for sure.

Hey, thanks! I tried to look it up, but couldn't find an answer.