@tadpole: Maintain away, but I believe that eponymous is not a word used regularly by most people in the US ( and don’t ask me to define “most people,” please). Perhaps Londoners are classier than we are.
—You’re right about my answer ^^ not being clear.Even I’m no longer sure of what I meant.
Try an informal survey amongst your friends, family and colleagues. I’d be curious. It’s a word that I, as a writer, am fond of, but I would never use it in casual conversation.