Many noble or illustrious families have resided in Hertfordshire. Some of the owners of old manors are mentioned in the Gazetteer; but a few prominent families may be here named. The Cecils have been Lords of Hatfield since James I. gave the manor to the first Earl of Salisbury in exchange for that at Theobalds. The Cowpers have resided at Panshanger since the erection of their castellated mansion in the Park a century ago by the fifth earl. The Egertons, Dukes and Earls of Bridgewater, lived at Ashridge; one of them, Francis, third duke, is known in history as "the father of British inland navigation," and another was the projector of the famous _Bridgewater Treatises_. The Capells, Earls of Essex, have owned the beautiful estate at Cassiobury Park since the father of the first earl obtained it by marriage during the reign of Charles I. The Rothschild family have an estate at Tring; Lord Ebury is the owner of Moor Park; Lord Lytton still owns the grand old house of the great novelist at Knebworth, founded nearly 350 years ago. The Earl of Cavan has a house at Wheathampstead; Viscount Hampden at Kimpton Hoo; Earl Strathmore at St. Paul's Walden Bury; the Earl of Clarenden (Lord Lieut. of Herts) at the Grove, Leavesden; Lord Grimthorpe lived at St. Albans. Gorhambury, near St. Albans, is the home of the Earl of Verulam. Mgr. Robert Hugh Benson lived and wrote many novels at Hare Street House, near Buntingford. DESCRIPTION OF PLACES IN HERTFORDSHIRE ARRANGED ALPHABETICALLY Abbreviations of architectural terms:-- E.E. = Early English. Dec. = Decorated. Perp. = Perpendicular.