Related Clues:

• A good while back
• Before any of us can remember, perhaps
• A long time in the past
• In the far past
• A long time since Agnes lost heart with an attempt
• Silvers, last seen in Bilko around the 1950s (latterly), brings years back
• Centuries in the past
• A while in the past
• Mature type of dessert from ancient times
• "It used to be that ... "