Really good question!!!
I always liked politics, spy games and strategy... So one day I was trying to create a character for Dungeons & Dragons , with Cuorion as DM... I couldn't find a good name for my character... He was build based to legionnaire or crusader soldier. So I search my dnd generators and found an name generator with option "Roman names". I used it and start reading. At some point read "Manius Gavius Crassus" Crassus name was known to me from history, I liked it, I took it... Shorted to Manius Crassus (since gavius sounds like gavos, at greek is the blind guy, I am wearing glasses and didn't wanted start any mocks..) Later this was used as Manius or Crassus or as total... Even I used it at my e-mail and other sites or similar situations...
I hope I covered you.