E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Wal’lop.
To thrash. Sir John Wallop, in the reign of Henry VIII., was sent to Normandy to make reprisals, because the French fleet had burnt Brighton. Sir John burnt twenty-one towns and villages, demolished several harbours, and “walloped” the foe to his heart’s content.
