I chose Lukas a while ago, maybe sophomore year, long before I had any idea that I might be trans. My friends and I were talking the whole "what if you could switch for a day.." scenario, and I'm not sure why, but the name Lukas jumped out at me. When I started thinking about it again more recently, I wondered if I wanted a different name, but decided I still liked it. However, I got curious after a bit, and fairly recently looked the name up, learned that the meaning of it is[roughly] light. I used that to find a new middle name for myself, and was able to keep both my initials [L.M.H.] and the approximate meaning of my whole name, if shuffled around a bit.
So my name would be Lukas Máni H, where now it is Luna Myriam H.
Female: Moon, Star of the sea/light
Male: Light, The Moon
[[sorry for the awkward formatting, I want to keep my last name off here just for the time being]]