(I know this probably has a legit answer that I could find with ten seconds of Google searching, but what's the fun in that?)

Let's take a hypothetical situation: A baby girl is born to two parents who for whatever reason (separation, maybe) give their child a hyphenated last name, i.e. Jane Brown-Smith.

Then little Jane grows up and wants to marry some dude whose last name is Davis. But for whatever reason, she wants to kind of keep her name, so she goes hyphenated again. Would her name then become Jane Brown-Smith-Davis? Or, even more extreme, if the guy had a hyphenated name, could she be Jane Brown-Smith-Davis-Monroe? What's the limits on hyphens in last names?

It'd almost be pretty fun if, say she's born Jane Brown-Smith, and then wants to marry a guy whose last name was Davis-Smith, her name could be Jane Brown-Smith-Davis-Smith.

Or, to save a lot of trouble and still achieve the same results, she could just go to whatever the office is and officially change her name to have all the hyphens she wants. I think the probability of that happening is much higher. But where's the fun in that?