Where did the name Four Saints come from? And why are there four pillars in our

Where did the name Four Saints come from? And why are there four pillars in our taproom??
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@heartshinestudios painted each of these pillars to represent each of the four patron saints of beer. The pillars are original to the building. Each of the pillars has a picture of a Four Saints’ Saint (who is modeled after a celebrity), why they are a beer saint, a picture of the beer, and their symbol.
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Can you guess what celebrity each saint is modeled after?