From Wikipedia, the free encyclopedia. Lee Yo-won (born April 9, 1980) is a South Korean actress. She is best known for her portrayal of Queen Seondeok in theeponymous hit period drama (2009), as well as for her work in Take Care of My Cat (2001), Fashion 70's (2005), Surgeon Bong Dal-hee (2007), and 49 Days (2011). more