Crime family matriarch Janette Mercer has now joined her sons in prison after failing to learn the harsh lessons of her past.
The name Sean Mercer was almost immediately linked to the murder of 11-year-old Rhys Jones in the community, and detectives were quickly onto the young gang thug.
Rhys was walking across the car park of the Fir Tree Pub in Croxteth Park on August 22, 2007, when he was shot in the neck by Mercer, who was aiming at a rival gang member.