Do'bye sounds like a plausible Forgotten Realms riff for the sight read lol.
Fantasy spelling is always nonsense. Do'bye reads to me like dough-bee-ay, as though Mr and Mrs Daubier emigrated from France to the Astral Plane and the Gith immigration officer couldn't be bothered to spell their name right.
Edit: Congratulations, Zentu and thank you for helping out. (I knew there was a non-stupid reason I started writing this post)