As heir to two titles, including the earldom held by his septuagenarian grandfather, Cavendish was destined for a short Commons career, and had already sat for three constituencies in three years in the unreformed Parliament, before topping the poll for the new constituency of North Derbyshire at the 1832 general election.
Although he seconded the address in 1836, he rarely spoke in the Lords, a tendency reinforced by the death of his beloved wife Blanche in 1840.
