Busch Stadium in Saint Louis is technically named in memorial of August A Busch III if I remember correctly, but note that the Busches wanted to name it Budweiser stadium and were told it couldn't be a product so they named it after Auggie and then introduced a new "Busch Beer" as a way around the ban. The company was named "Anheuser-Busch" but they didn't want it to be named that, they wanted it after a product. And given that like Pillsbury it's actually a person's name, it's kind of a nice example. So while it's a weird precedent, there is certainly a precedent.Random Thought: We are lucky in that none of the realistic options for this stadium are terribly tacky, like Qwicken Loans Arena. Even U.S. Bank, for being a bank, is so sterile that it doesn't sound weird. That said, it could be cool if General Mills bought the rights but named the stadium after its Pillsbury brand. Besides having its roots in Minneapolis, Pillsbury is a major national brand and also the name of an influential family in state history. So, in theory, it could be a win-win-win.
I doubt it's realistic, unfortunately. I can't think of another stadium named after a brand rather than the parent company, and General Mills would get more "bang for the buck" just putting its own name on the stadium. A General Mills Field wouldn't be terrible, and we could call it the Cheerio, but I kind of like the idea of Pillsbury since it would be like naming the stadium after a dignitary, even though it's actually a brand. We would have just a tiny slice of dignity over our friends like the University of Phoenix Stadium.
It could be Charles Alfred Pillsbury Memorial Field, which would be kind of nice. And yeah, I have no idea whether Pillsbury was a jerk, but likely any captain of industry who essentially owned a city in the late 1800s was some kind of jerk.
They could paint the roof blue and do up the Pillsbury logo on it; too bad it won't be round.
One small problem though is that when General Mills bought Pillsbury (sorry, "merged" like how Norwest "merged" with WF by buying all its stock), they sold off a few divisions of the company to Smucker and sold them the right to use the name in marketing for those products. So in using the Pillsbury name they would inadvertently be giving free advertising to some Smucker products; they might prefer to push brands that are fully under their tent instead.