Responses
They could always have MC adopt a different name from another noble house
╮(￣▽￣)╭
That’s usually what happens when commoners get noble status by being adopted
I doubt they’d care about that because child brides were legal during that time
The brother of the ML i hope he doesn't try to date the MCs sister. If they end up getting married or something that'll make the ML and MC in laws. Not a good path to go down.