I discovered in 1998, via an online search (AltaVista in those days, rather than Google) that I shared my name with a Canadian musician and writer. Googling my name alone tends to bring up material about him rather than me, but a search for Aidan Baker Cambridge drew material that I recognized very well from my own life. The online directory 192.com told me there were 21 Aidan Bakers in the UK.
A search of https://haveibeenpwned.com/ showed that two sites I use fairly regularly -- LinkedIn and Patreon -- had been compromised. I have changed my password on both.