Local Administrative Units, II, 463, 465, gives separation date as 1772 and 1722. However, here following Bishop Gastrell's notes in The Cumbria Parishes, 1714-1725 from Bishop Gastrell's Notitia with additions by Bishop Porteus, 1778-1779, ed. L.A.S. Butler, Cumberland and Westmorland Antiquarian and Archaeological Society, vol. 12 (1998), 117.