July – Henry Cromwell, son of Oliver, is appointed as major-general of the forces in Ireland and a member of the Irish council of state. After the Lord Deputy, Charles Fleetwood, departs for England in September, Henry Cromwell de facto takes over that role also.
^Cokayne, George Edward (1892). Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct, or Dormant. Vol. IV (1st ed.). London: George Bell and Sons. OCLC 1180828941. – G to K (for Hamilton of Strabane)
