| Date | | | |
| 20-Apr-1909 | | Heraldic Museum, Office of Arms, founded by Capt. Nevile Wilkinson, Ulster King of Arms, opened by His Excellency the Lord Lieutenant. | |
| 8-Sep-1909 | | The Right Hon . Viscount Iveagh, K.P., LL.D presented by the Corporation of Dublin with an address of thanks for his munificent gifts to the City of Dublin. | |
| 31-Oct-1909 | | The Royal University of Ireland dissolved and the National University of Ireland established by Royal Charter. | |
| 8-Nov-1909 | 12 | Four battleships of the Atlantic Fleet, under the command of H. S. H. Prince Louis of Battenberg, at Kingstown. | |
| 9-May-1910 | | King George V. proclaimed in Dublin. | |
| 29-Aug-1910 | 30 | First Aviation Meeting in Ireland held at Leopardstown racecourse under the auspices of the Aero Club of Ireland, when successful exhibition flights were made by Capt. Bertram Dickson, Mr. Cecil Grace, and Mr. Armstrong Dexel. | |
| 11-Sep-1910 | | Mr . Robert Loraine, attempted to fly across the Irish Channel from Holyhead to Dublin, but the Aeroplane fell into the sea a couple of hundred yards from the Bailey Lighthouse, Howth. | |
| 5-Jul-1911 | 12 | Twenty-three warships of the Home Fleet at Kingstown , under the command of Adm. Sir Francis Bridgeman , K.C.B. | |
| 8-Jul-1911 | | Their Majesties the King and Queen, with the Prince of Wales and Princess Mary, arrived at Kingstown and drove to Dublin Castle amidst scenes of great enthusiasm. Their Majesties opened the new Royal College of Science, Upr. Merrion-street, subsequently visiting Trinity College, the Phoenix Park Races, and the Iveagh Play Centre in Francis-street. The Prince of Wales and Princess Mary attended the Dublin University Regatta, Island Bridge. | |
| 9-Jul-1911 | | Their Majesties attended Divine Service in St. Patrick's Cathedral, and afterwards visited Maynooth College and the Royal Hospital, Kilmainham. | |