Career
He lived at Brightwell, Suffolk. Barnardiston was admitted to Gray"s Inn on 10 February 1679. He was Member of Parliament for Ipswich between 1698 and 1700.
He died on 3 January 1709 at age 49 at Charter House yard, Middlesex, without issue.
He was buried on 11 January 1709 at Ketton, Suffolk. His will (dated 20 January 1709) was probated in December 1711.