Ah! I knew there'd be a thread on this. And I think it answered my question: if I take his last name, I can legally do what I like for a middle name. Correct?
In the US, a married woman traditionally takes her maiden name as her middle name. In the UK, my understanding is that she traditionally keeps her old middle name and drops her maiden name. Is that right? Just as a matter of curiosity.
I'm from the deep South in the US, so I have one of those preposterous four-word, ten-syllable maiden names that includes my home state. If I go Firstname Middlename Middlename Marriedname, I'm going to sound like an American cartoon character. However, if I go Firstname Maidenname Marriedname, I'm going to sound like Lady Snotty of Stuckup Manor, Buggeroff-on-Sea. Oddly, I think I prefer the latter.
One more question: does this forum prefer that old threads are resurrected as opposed to starting new threads on the same topic? One of the bulletin boards I frequent is super fussy about this. If you ask a question, an old hand will sigh and point you to a three-year-old thread rather than answer the freaking question. This place seems a bit mellower than that.