His grandson, the third Viscount, sat as a member of parliament for Yorkshire but died from wounds received at the Battle of Campen in 1760.

In 1797, he was created Baron Dawnay, of Cowick in the County of York, in the Peerage of Great Britain.

In 1897, he was created Baron Dawnay, of Danby in the North Riding of the County of York, in the Peerage of the United Kingdom.

Guy Dawnay, fourth son of the seventh Viscount, was a soldier and Conservative politician.

The heir presumptive is the present holder's cousin Thomas Payan Dawnay (born 24 July 1978)[citation needed]