Charles J. Archard, The Portland Peerage Romance
“ His name in its extended form was William John Cavendish-Scott-Bentinck, and for many years, till the death of his brother Henry, he had no prospect of succeeding to the Dukedom. At nineteen he was a lieutenant in the army, and in 1824 was returned as Member of Parliament for King's Lynn; but the duties of a legislator do not seem to have been much to his taste and he resigned in 1826, his brother, Lord George Bentinck, being elected to take his place.The fourth Duke kept a large stud of race-horses and Lord John was brought up in the atmosphere of the turf. ”
