Arms of the Duke of Aquitaine

From The Blazon of Gentrie by Sir John Ferne (1586) p218

Blazon: Gules a lion passant guardant or

Ferne repeats the common trope that the arms of England originated from combining the arms of Normandy with those of Aquitaine after Richard I, heir of Eleanor of Aquitaine, took the throne. While this is difficult to prove, Richard I certainly used the three lions passant guardant during his lifetime, as evidenced by his Great Seal.

Arms of Great Yarmouth Borough Council, England

In use since at least 1563; registered 1908

Blazon: Gules three lions passant guardant or dimidiated with azure as many herrings in pale fesswise argent

Motto: Rex et nostra jura (The King and our rights)

The device of the lions dimidiated with herrings is obviously related to the famously peculiar arms of Cinqe Ports, though it is not clear whether this is an intentional homage or another case of dimidiation having an unexpected result.