Well, you’re close with the Castor-Pollux connection! My URL is a callback to 2 stories I’ve written–the first big epic I ever wrote about a magic crystal rose (I was 12 and thought it was a masterpiece at the time…), and a more recent(ish) scifi novel that takes place on an exoplanet of Pollux (…I should really publish that thing; I’ve been sitting on it for a while…)
My URL also is a reference to the fact that my real name means “flower” and I’m a Gemini (and I found out later that my name is traditionally associated with Gemini, so it ended up being actually super accurate).