Would you be also bothered by the sentence Harry Wismer was the first owner of the New York Jets?
He never owned the Jets, he owned the NY Titans.
How about the statement Hailey Beiber was born 11-26-1997. Her name was Baldwin at the time.
1) Yes, it should say that Wismer was the owner of the NY Titans, if they want they could add that it was the precursor to the NY Jets. Just as they could have done with Beathard.
2) No, names of individuals is totally different, whether it's married names or stage names or pen names. Whether it's Samual Langhorne Clemens or John Couger IMO you should use the name that was relevent to the topic that is being discussed. If someone asks me who sang "Jack and Diane" I'm going to say John Couger, if someone asks me who wrote "Tom Sawyer" I'll say Mark Twain.