The Thelir or Thilir were a North Germanic tribe that inhabited the region now known as Upper Telemark in modern Norway during the Migration Period and the Viking Age. The region of Telemark, which originally only referred to Upper Telemark, was named after them, and means the "mark of the Thelir." The Thelir are mentioned in the Saga of Harald Fairhair by Snorri Sturluson, as one of the tribes who fought against Harald Fairhair in the Battle of Hafrsfjord.
- Alex Murphy Ruairi O Connor John Reardon About Us The Lir Academy Thelir ie. 2018 - 06 - 18. Retrieved 2019 - 05 - 07. PATRICK HEALYAUG. 26, 2011 2011 - 08 - 26
- Upper Telemark was originally known simply as Telemark and is named for the Thelir Old Norse: Þilir the ancient North Germanic tribe that inhabited what