Will he resign?
In 19th century and even - first half of 20th, that, probably, would be considered as "nothing special")))))). I remember, that some southern women insisted to be called "Ms. John Smith" instead of "Jane Smith". Times change....
You are making up your facts which exonerate such a behaviour. That is sinister.
It was never "nothing special" in well-off families. Even if the police didn't intervene, the wives could and did leave their home.
And what you remember has no bearing on this. Using your husband's full name was not uncommon around the Western world until the 50s.
I never tried to exonerate anybody. As old Russian saying goes: "It's not a good idea to look for a black cat in the dark room. Especially if it's not there..". Don't try to say for me what i hadn't said. Almost everything is dependent on place and time. For example - in old 19-century Russia there was a proverb, usually quoted by women, which can be translated as "If he doesn't hit (or - beat) you - he doesn't love you". As bad as it is - it's historical fact... What was almost "normal" in one historical period may be atrocious in another.