One of the more interesting characters from the series comes into play at the end of A Clash of Kings (Game of Thrones, Season 2)
She certainly looks the part - "kissed by fire" red hair, slender, pretty, but not traditionally pretty..
http://www3.pictures.zimbio.com/gi/Rose+Leslie+Red+UK+Film+Premiere+Outside+Arrivals+k7q8_-fUWwEl.jpgand, here with more Ygritte-like hair
You know nothing about the casting of Ygritte! Until now: HBO is ready to unveil the final significant player added to the Game of Thrones second season cast.
Downton Abbey actress Rose Leslie has landed the key role of a Wildling woman that Jon Snow meets during during his adventures beyond the Wall. Ygritte is described as “strong-willed, witty, skilled in battle and survival in the wilderness. An unconventional beauty, skinny but strong with red hair (which the Wildlings consider ‘kissed by fire’).”
Leslie’s arc on Abbey wrapped at the end of its successful first season on PBS. She played Gwen, a maid who eventually snags her dream job as a secretary. It’s unclear whether she’ll return to the Emmy-winning series, which returns to PBS in January.
http://insidetv.ew.com/2011/10/10/game-of-thrones-rose-leslie/