the Old Block Island Cemetery is where the grave of Quahog pioneer Miles "Chatterbox" Musket's son, Timmy Musket, lies.
When Peter Griffin becomes convinced a restaurant placemat is a treasure map in "Finders Keepers", clues lead him and competing members of Quahog to the Old Block Island Cemetery on Block Island to the grave of Timmy. Digging up the grave, they discover another clue inside the coffin which leads most of the town to Pawtucket to McCoy Stadium.