I was a big fan of Greek History (and others). I played a ton of PC games like Rome Total War, Age of Mythology, Medieval Total War, and Age of Empires 2. And I read a fun little book series called The Farsala Trilogy.
The username didn't materialize until I needed to name my Warlock in World of Warcraft. I had been using my real name before that for most of my characters, this was the first name that felt fantasy to me. I also named my hunter Achaia after the region in Greece, but that one didn't stick with me.
Farsala in Greek= AKA Pharsalos, just a random city in Greece that happened to exist in ancient times. In Greek Mythology, it is the birthplace of Achilles.