Centenarian Jessie Gallan was born and raised in a small cottage. She has never been married. When she was a young girl, she lived with her family, including five sisters and a brother. She left home eventually when she turned 13 and became a milkmaid. Then, she worked as a farm kitchen helper. She also worked at a hotel and witnessed the hotel visit of the Queen and the Queen Mother.
Gallan was industrious. She seldom takes day offs or holidays. She also had a healthy lifestyle. Even at her old age, she still frequently exercised. She took part in group activities and even went to church and concerts. She lived at the Crosby House nursing home until her death in March 2015.