Lucy Buck was the daughter of Larry and Avis Buck, and twin sister of Ian. Ian and Lucy were born in 1923 and lived at 9 Coronation Street. The babies were often left alone while Avis worked at the Rovers Return and Larry drank. On one such occasion before their first birthday, a fire started at No.9 which Larry discovered in time to raise the alarm. Tommy Foyle managed to save Ian but in all the confusion, Lucy was forgotten.