We have 4 different surnames in our household and its not been a problem.
I have my name
Husband has his name
Kids have my name - his name
Step kids have their mums name - his name
No one has ever found this counfusing or asked lots of questions about it . Ive had the occasional raised eyebrow which i give the aforementioned Paddington hard stare. I must be bloody terrifying !
The few times anyone has asked me about our names, I reply as if they had asked me “ why didnt your husband change his name when he married you? “.
So person filling in forms askes for names and marital status. When i say married they say “ oh I assumed cohabiting , is X your own name ?“.
So i say “ yes X is my own surname and Y is my husband’s own surname. Neither of us use anyone else’s name “.
“ why didn’t you change your name? “
“ my husband didnt want to change his name, he’d had it for 35 years and was very attached to it. I know lots of women would object but I love him and wanted him to be happy.” Etc etc
“ Didn’t you want to all have the same name ?”
“ My husband didnt want to change his name. For some reason he thought it would affect his career and be so much unnessaary paperwork. So I guess it doesn't bother him. “