Johanna St John (1631–1705)[1] was an English gardener and herbalist, and the eldest daughter of a notable Parliamentarian, Oliver St John.[2] She would eventually marry Sir Walter St John, a distant relative.[2] Throughout her life, St John constructed two recipe books containing culinary, cosmetic, and medicinal recipes.[1] She was the grandmother to the first Viscount Bolingbroke, Henry St John.[3]