Tavny (or Tavnia) was a planet in the Umani sector, in or near the space of the Federation in the Alpha or Beta Quadrant. Tavny was the homeworld to the Tavnian civilization. (DS9 comic: "Lwaxana Troi and the Wedding of Doom", TNG - Slings and Arrows eBook: The Insolence of Office; ST website: StarTrek.com)