Henry Courtenay, 1st Marquess of Exeter

Henry Courtenay, 1st Marquess of Exeter (c. 1498 – 9 December 1538), KG, PC, feudal baron of Okehampton, feudal baron of Plympton, of Tiverton Castle, Okehampton Castle and Colcombe Castle all in Devon, was a grandson of King Edward IV, nephew of the queen consort, Elizabeth of York and a first cousin of King Henry VIII.

He was born in about 1498, the first and only surviving son and heir of William Courtenay, 1st Earl of Devon (1475–1511) by his wife Princess Catherine of York (died 1527), the sixth daughter of King Edward IV by his wife Elizabeth Woodville. His maternal first cousins therefore included King Henry VIII and his sisters Margaret, Queen Consort of Scotland and Mary, Queen Consort of France.

At the time of his birth in 1498 his paternal grandfather Edward Courtenay, 1st Earl of Devon (died 1509) was still living and Henry's father William Courtenay was his eldest son and heir apparent. In 1504, during the reign of the Tudor King Henry VII, William Courtenay was accused of maintaining correspondence with Edmund de la Pole, 3rd Duke of Suffolk, the leading Yorkist claimant to the throne, and the king ordered him incarcerated in the Tower of London and he was attainted in February 1504, which disabled him from inheriting his father's Earldom.

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