June 21, 1691Godert De Ginkel, the Commanding General of the William of Orange Army, Begins a Ten-Day Siege of Athlone
June 21, 1791Robert Napier, Regarded as the Father of Clyde Shipbuilding Was Born. He Died On, 23 June, 1876.
June 21, 1826Frederick Blackwood, 1st Marquess of Dufferin and Ava, Diplomat and Holder of Estates at Clandeboye, Co. Down, Is Born in Florence
June 21, 1897James Connolly Is Arrested During a Demonstration Commemorating 1798; Maud Gonne Pays the Fine for His Release