Kid’s names
Whereas it used to be the case that every woman would take their husband’s name when they got married, it’s becoming more ad more common for women to keep their maiden names. This can be for business reasons if they’ve become known in their career, or on principle. A lot of men are completely fine with this, but it gets a bit trickier when it comes to children.
In this case, there is the problem of a parent and a child ending up with different surnames. This can be tricky when traveling and in other legal cases. I’m not sure how this couple should resolve their issue but going double-barrelled is always a possibility.