Earl of Devon is a title that has been created several times in the Peerage of England. It was possessed first (after the Norman Conquest of 1066) by the Redvers family (alias de Reviers, Revieres, etc.), and later by the Courtenay family. It is not to be confused with the title of Earl of Devonshire, which is held by the Duke of Devonshire, although the letters patent for the creation of the latter peerages used the same Latin words, Comes Devon(iae). It was a re-invention, if not an actual continuation, of the pre-Conquest office of Ealdorman of Devon.

Close kinsmen and powerful allies of the Plantagenet kings, especially Edward III, Richard II, Henry IV and Henry V, the Earls of Devon were treated with suspicion by the Tudors, perhaps unfairly, partly because William Courtenay, 1st Earl of Devon (1475–1511), had married Princess Catherine of York, a younger daughter of King Edward IV, bringing the Earls of Devon very close to the line of succession to the English throne. During the Tudor period, all but the last Earl were attainted, and there were several recreations and restorations. The last recreation was to the heirs male of the grantee, not (as would be usual) to the heirs male of his body. When he died unmarried, it was assumed the title was extinct, but a much later very distant Courtenay cousin, of the family seated at Powderham, whose common ancestor was Hugh de Courtenay, 2nd Earl of Devon (d.1377), seven generations before this Earl, successfully claimed the title in 1831. During this period of dormancy, the de jure Earls of Devon, the Courtenays of Powderham, were created baronets and later viscounts.

Earl of Devon

During this time, an unrelated earldom of a similar name, now called for distinction the Earldom of Devonshire, was created twice, once for Charles Blount, 8th Baron Mountjoy, who had no legitimate children, and a second time for the Cavendish family, now Dukes of Devonshire. Unlike the Dukes of Devonshire, seated in Derbyshire, the Earls of Devon were strongly connected to the county of Devon. Their seat is Powderham Castle, near Starcross on the River Exe.

Earl of Devon

The Earl of Devon has not inherited the ancient and original Barony of Courtenay or the Viscountcy of Courtenay of Powderham (1762–1835); nevertheless, his heir is styled Lord Courtenay by courtesy.

Earl of Devon

Ealdormen of Devon

Before the Norman Conquest of 1066, the highest sub-regal authority in Devon was the Ealdorman, of which office the later Earldom of Devon was a re-invention, if not an actual continuation.

Odda, under Alfred the Great, led Anglo-Saxon forces in the Battle of Cynwit, ultimately defeating an army led by Viking chieftain Ubba. Ordgar (d.971), under King Edgar (ruled 959–975). He founded Tavistock Abbey in 961. His son was Ordwulf (died after 1005), who realised the founding.

The post-Norman earldom

The first Earl of Devon was Baldwin de Redvers (–1155), son of Richard de Redvers (d.1107), feudal baron of Plympton, Devon, one of the principal supporters of King Henry I (1100–1135). It was believed by some that Richard de Redvers had in fact been created the first Earl of Devon, and although in the past this caused confusion concerning the numerical ordering of the Earls of Devon, the point is now more clearly settled in favour of Baldwin as the first. Baldwin de Redvers was a great noble in Devon and the Isle of Wight, where his seat was Carisbrooke Castle, and was one of the first to rebel against King Stephen (1135–1154). He seized Exeter Castle, and mounted naval raids from Carisbrooke, but was driven out of England to Anjou, France, where he joined the Empress Matilda. She created him Earl of Devon after she established herself in England, probably in early 1141.

Baldwin de Redvers, 1st Earl of Devon, was succeeded by his son, Richard de Redvers, 2nd Earl of Devon, and grandson, Baldwin de Redvers, 3rd Earl of Devon, and the latter was succeeded by his brother, Richard de Redvers, 4th Earl of Devon, who died childless.