Inga Swenson: Inga Swenson. Actress: Benson. An accomplished and seasoned actress of stage and screen, Inga Swenson became best known for her portrayals of formidable, often acidulous women on TV. Arguably her most popular role was that of snarky Gretchen Wilomena Kraus, the German-born head housekeeper and later administrative assistant in Benson (1979). Inga was so convincing in her role (which earned her three Emmy Award nominations as Best Supporting Actress) that...