User blog comment:DarkSkullPirates/Amazon Lily's Former Empress/@comment-4899461-20120919032231

I've thought about this before, actually. According to Hancock, she's the "former-former-former empress" which I think would place her with a generation no younger than Roger/Garp, if not one generation older than that. So it's unlikely that she's Luffy's mom or anything (Perhaps one of the unseen other former Empresses could still be his mom though...).

Her living in the Archipelago which is so close to the former Marine HQ could suggest that she fell for a marine like Garp or Sengoku...(Random shipping: Nyon x Tsuru)