The eldest son of a popishly inclined Cumberland magnate, Curwen entered into his inheritance in 1623, shortly after attaining his majority. Like his father, he innovated to increase his income from the Workington estate. For example, he used prodigious quantities of lime to raise the yield of his demesne to £500 a year, and exported salt to Ireland in his own ships. He also carefully inspected his steward’s accounts, which show net annual receipts from his coal mines and other industrial activities of £128,
At the duke of Buckingham’s instance, Curwen, like Sir William Brereton*, was excused the usual baronetcy fee in 1627; but he was still obliged to compound for knighthood in 1631.
