Susan Ida Barlow (previously Baldwin) was the daughter of Ken and Valerie Barlow, twin sister of Peter, wife of Mike Baldwin and mother of Adam Barlow. Her middle name, Ida, is in honour of her paternal grandmother Ida Barlow, who died in 1961. Susan returned to Scotland and gave birth to Adam, and kept his existence secret from Mike and her family until 2001. When Mike found out about Adam and demanded custody, Susan left Glasgow with the intention of going where Mike couldn't find her, but she was killed in a car crash on the journey. Adam survived.