"Never shall I forget the panic that seized on “all the boys” when the fact was announced that a leg of mutton had been stolen from the larder. Who could be the thief? Why, of course, nobody but Bonaparte. Miss Frounce, wishing to enhance the intimidating reputation of her great bugbear, favoured the idea, and the whole of the “young gentlemen from three to eight,” were under the firm impression that Bonaparte had landed in England during the night, secured the leg of mutton, and retreated before daylight into the bosom of his own army."

https://curiousrambler.com/2018/01/12/boney-napoleon-scares-british-children/