Events from the year 1656 in Ireland.
Incumbent Lord Protector: Oliver Cromwell
Events Cromwellian soldier William Morris becomes a Quaker, founding a meeting at Belturbet, County Cavan, before returning to his home at Castle Salem, Cork. William Petty completes the comprehensive mapping of Ireland known as the Down Survey.
Births 17 April – William Molyneux, natural philosopher and writer, founder of the Dublin Philosophical Society (d.1698).
Deaths 21 March – James Ussher, Archbishop of Armagh (Church of Ireland) and Primate of All Ireland, published the Ussher chronology purporting to time and date creation (b. 1581) Approximate date – Sir Dominick Browne, merchant and landowner (b. c.1585)
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