Annabeth, Piper, and the rest of the Athena Cabin, read Harry Potter. After Percabeth and Jasper got married, Annabeth and Piper were originally planning to name their kids Delphinus, Orion, Cassiopeia, etc. but decided to name them after people who died, while the Athena Cabin named them after constellations as planned, but it caused a bit of chaos, since most of the boys were named Sirius, and no one could call their kid without anyone else's kid coming too.
