A Yorkshire pottery and porcelain factory on the estate of the Marquis of Rockingham, 1745-1842. It produced earthenware similar to that at leeds and some with a treacle-like glaze, including the lidless cadogan teapot. From 1826, Rockingham made fine-quality bone china tea and dessert services, vases, and well-modelled animals and figures. During the 1830s, extravagant floral decoration appeared particularly on ornamental ware.