The Witcher wiki now has a light themed alternative for the wiki skin. To check it out, go to Special:Preferences, then choose the "Appearance" tab and click on the radio button next to "Hydra".
Clan Tuirseach is one of the most influential clans controlling the Skellige Isles. Its legendary founder is the hero Tyr, who fought and defeated a great bear named Yngvar. Clan has ties to another powerful clan, an Craites.