Physicist, naval commander, and diplomatist, son of Sir Everard Digby, born Gayhurst, England, July 11, 1603; died Covent Garden, England, June 11, 1665. He was knighted, 1623, and in 1628 defeated the French and Venetian galleys at Iskanderun, in a privateering expedition. In 1642 he was imprisoned for the Faith and then exiled to France, where he wrote two philosophical works. He returned to England and became intimate with Cromwell, who employed him abroad on several missions.