Pitt was born at Boconnoc, Cornwall, the only son of Thomas Pitt, 1st Baron Camelford and Anne, daughter of London merchant and politician Pinckney Wilkinson.
Pitt was born at Boconnoc, Cornwall, as the only child of Thomas Pitt, 1st Baron Camelford, and Anne, who had ties to a successful London businessman and politician, Pinckney Wilkinson.