My wife took my name, but I would not give the slightest shit if she didn’t, which I made clear to her at the time.

We briefly discussed having a double-barrel surname, but writing that out would be a mild inconvenience that neither of us want.

And maybe this is a dumb question, but what happens when forename surnameA-surnameB marries or has children with forename surnameX-surnameY?

What is the resulting name? forename surnameA-surnameB-surnameX-surnameY? Do they pick one of each, e.g. A-X?