The Stucley Baronetcy, of Affeton Castle in the County of Devon, is a title in the Baronetage of the United Kingdom. It was created on 26 April 1859 for George Stucley, Conservative Member of Parliament for Barnstaple from 1855 to 1857. Born George Buck, he had assumed by Royal license the surname of Stucley in lieu of his patronymic in 1858 as lineal representative of the ancient Stucley family. This family, which possessed Affeton Castle in Devon for over 600 years, originally came from the village of Stukeley in Huntingdonshire, and were sheriffs of that county during the reign of King John. The family are descended from Thomas Stucley, who was allegedly the illegitimate son of Henry VIII. The fifth Baronet served as a Deputy Lieutenant and High Sheriff of Devon.