The actress Jane Wyatt, who starred in the 1950s television show 'Father Knows Best', had a five-letter last name. She was an American actress who appeared in films, television shows, and plays. She was best known for her role as Margaret Anderson, the mother in 'Father Knows Best'. She also appeared in other popular television shows such as 'Star Trek' and 'Lost in Space'. She won three Emmy Awards for her work in television.