The Minneapolis Science Fiction Society (MinnStF) & its convention, has a long-standing policy: The right to freedom of speach does not include the right to shout David in a crowded party. I did once, & four people turned around.
Every year at Minicon, they have a photo session for the League of Super Davids. One year I attended, the photo included 47 people, one of them a woman (whose surname was David).
There was an APA for years called APA-David. All authors had the name David.