GREENALGH (or GREENHALGH) WITH THISTLETON, a township in Kirkham parish, Lancashire; gear the Fleetwood railway, 3 miles NW of Kirkham. It includes Esprick hamlet; and has ruins of a castle, said to have been built by the first Earl of Derby, and seeming to have comprised seven or eight towers of much height and strength. Acres, 1,821. Real property, £4,082. Pop., 383. Houses, 75. There is an Independent chapel.
John Marius Wilson, Imperial Gazetteer of England and Wales (1870-72)