Mary Elizabeth "Mimi" Smith, informally known as Aunt Mimi, was a maternal aunt and the parental guardian of the English musician John Lennon. She was born in Toxteth, Liverpool, as the oldest of five daughters. She became a resident trainee nurse at the Woolton Convalescent Hospital and later worked as a private secretary. On 15 September 1939, she married George Toogood Smith, who ran his family's dairy farm and a shop in Woolton, a suburb of Liverpool.