George Weir, Historical and Descriptive Sketches of the Town and Soke of Horncastle…
“ Amongst the remains of antiquity at this place, the vestiges of the Roman fortress are the most worthy of attention; and although they are too small to give an adequate idea of the original structure, are yet sufficient to show the form and extent of the space enclosed, which appears to have been nearly a parallelogram, of about six hundred feet in length, and in breadth three hundred and fifty on the east, and three hundred on the west. ”
