this is one of the things about getting older about which no one would ever even think of mentioning, but to me it's surely emblematic of becoming part of a fading time.
i don't mean to be morose! not at all. if you're paying attention you notice stuff. that's all. young marrieds are nostalgic about stuff you grew up with. stuff like that.
sometimes really finding out "whatever happened to..." completely breaks your heart. and sometimes something that you've forgotten having done gives a gift to someone you didn't meet till decades later. oh joy!
there's every chance you will be known then remembered by some impression you left, even if it was a misinterpretation, or a misunderstanding, or an attribution that was assumed but never deserved. in fact the chances of that lasting impression have anything to do with the real you are very very small.