Katherine Burton is a Welsh actress, the daughter of actors Richard Burton and Sybil Christopher. On television, Burton received critical acclaim as Ellis Grey in the Shonda Rhimes drama series Grey's Anatomy, and as Vice President Sally Langston on Scandal. She has been nominated for three Primetime Emmy Awards and three Tony Awards.

Sybil Christopher, formerly known as Sybil Burton, was a Welsh actress, theatre director, and founder of popular celebrity New York nightclub "Arthur". She came into the public eye as the first wife of Richard Burton.