Fenway Park was probably named after a real estate company. No, really. You can look it up. Sure, the swamp that marked the area where the great venue now stands was called "the Fens" and the neighborhood was, and is, called Fenway. But in 1911, Boston's soon-to-be-former owner, John I. Taylor, was the driving force behind the construction of the ballpark and also happened to own a real estate company called the Fenway Realty Company. At the very least, the name choice served a dual purpose.
Best I can tell, Taylor's real estate company is long gone, and Taylor died in 1938.