
The City of Gloucester has an ancient obligation to send a dish of Lampern, also known as Lampreys (Lampetra fluviatilis) to the monarch on his / her succession and annually at Christmas. King John fined the men of Gloucester 40 marks because “They did not pay him sufficient respect in the matter of his lamperns.”
A surfeit of Lampreys!
Henry I died of a surfeit of them.