SPROTBOROUGH, (Yorkshire, W.R.) to the N. E. of Rotheram has a park on the bank of the Done, which comes to it from Conisburrow, and was the seat of the ancient family of Fitz-williams, from which it descended to the Copleys, of whom the late Sir Godfrey made it a delightful seat, with canals, gardens, fountains, &c. Great banks are to be seen near it, which run some ms. to the N. and are supposed to be the remains of the Roman Ikenild-Street.