A "Discourse on the Commerce of the Romans" was by Clarke or Bowyer. Clarke drew up a manuscript "The Antiquities of the Cathedral of Chichester",’ which was presented by his grandson to Alexander Hay, the local historian. Clarke married Anne Wotton (b. June 1700, d. 11 July 1783), daughter of Dr. William Wotton, by whom he had three children, two of whom survived him:a son, Edward, and a daughter, Anne, who died, unmarried, at Chichester.