| Date | | | |
| 1845 | | Military Prison, and Protestant and Roman Catholic Chapels, Arbour-hill, commenced. First stone of a new Presbyterian Meeting-house, Upper Ormond-quay, laid. | |
| 1846 | | Presbyterian Meeting House, Lower Gloucester street, North, opened for Divine service. | |
| Aug-1846 | | Great Southern and Western Railway opened to Carlow. | |
| 15-May-1847 | | Death of Daniel O'Connell, at Genoa | |
| 16-May-1847 | | Death of the Earl of Bessborough, Lord Lieutenant of Ireland | |
| 28-Jun-1847 | | Midland Great Western Railway opened. | |
| 5-Aug-1847 | | Interment of the remains of O'Connell in Mount Prospect Cemetery, Glasnevin. | |
| 27-May-1848 | | Conviction of John Mitchel, for felonious publications in The United Irishman newspaper, under the Treason Felony Act, for which he was forthwith transported to Bermuda Island for 14 years. | |
| 18-Jul-1848 | | Dublin proclaimed under the Crime and Outrage Act. | |
| 26-Jul-1848 | | The Habeas Corpus Suspension Act arrived in Dublin. The Confederate clubs proclaimed illegal by the Lord Lieutenant. Warrants issued to seize the leaders of the Young Ireland party, who had dispersed themselves from Dublin to organize clubs in the Southern counties. | |