If you go to someone's profile there is a small icon next to their name that shows the previous usernames. Out of respect you should probably not mention the name outright, but it should keep you informed if that's what you wanted
I haven't played my Switch n a month or so, just been playing Xbox, and just picked to play lil and Damn that A and B, X and Y being reversed always gets me.
@BigOnYa:
I haven't played my Switch n a month or so, just been playing Xbox, and just picked to play lil...