Last name didn't change after getting married.
I moved two sims in together and when they got married, the female still has the same last name she did before they got married, and their child has her last name.
Forum Discussion
"emmaning;13511793" wrote:
It's not an issue its part of the game eaxis forgot to tell us about for they were far more excited about EMOTIONS, PROMOTIONAL SIMS and MESSING UP SIMS LIVES as they made a fuss over what they felt was important. It isn't a glitch but I quite like it as my sims get a a frequent divorce. When they have a kid however, a little menu should come up asking "congrats. it's a (boy/girl)! What would you like to call it" then a little thing beneath it with two boxes first one is labelled first and has a random appropriate gender first name in which you can change, it has a dice next to it for full randomisation. The second one is labelled last or surname and contains one of the parents surnames (usually the mom) but this also has a randomisation dice. If you want to change a sim's surname, this can be done by entering Ctrl shift c then putting in the box: testingcheatsenabled true then entering in the same box after it: cas.fulleditmode then shift click the sim you want to change then click the option 'edit in cas' there it'll open the cas menu you used to create them.
The most recent patch made it so you don't need the cheat to change names anymore.
