Which television role was Ann Tyrrell known for in her U.S. television career?

Ann Tyrrell (February 6, 1909 – July 20, 1983) was an American stage, film and television actress. Tyrrell is best known for her roles in both of the Ann Sothern CBS sitcoms 'Private Secretary' (1953–1957) and 'The Ann Sothern Show' (1958–1961).

Ann Tyrrell won her first film role in 1949 at the age of forty as 'Miss Swanson' in 'Bride for Sale'. The following year she appeared as a clerk in the motion picture version of Tennessee Williams's 'The Glass Menagerie' (1950). In 1951, she was cast as a telephone operator in Ronald Reagan's 'Bedtime for Bonzo'. She and Reagan shared birthdays, but she was two years his senior.

In 1953, she appeared unbilled as 'Mary Tudor' sister of Queen Elizabeth I in the M-G-M historical drama 'Queen Bess' and in 1955, she appeared in the film 'Seven Angry Men' with Raymond Massey and Jeffrey Hunter.

Between film appearances, Tyrrell guest starred in episodes of 'Adventures of Superman', 'The Adventures of Kit Carson', and 'The People's Choice'.

Her major opportunity came in 1953 when she was cast for four seasons in the role of office receptionist Violet "Vi" Praskins, friend and colleague of Susie MacNamara, played by Ann Sothern, in the sitcom 'Private Secretary'. After the series ended in a contract dispute in 1957, Tyrrell joined 'The Ann Sothern Show' as Olive Smith, roommate and secretary of Sothern's new character, Katy O'Connor.