| Date | | | |
| 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. | |
| 28-Jul-1848 | | Proclamations issued by the Lord Lieutenant and Privy Council, offering £500 reward for the arrest of William Smith O'Brien, M.P., charged with High Treason, and £300 each for the arrest of Messrs. Meagher, Dillon, and Doheny, his associates. | |
| 5-Aug-1848 | | Committal of William Smith O'Brien to Kilmainham gaol, having been arrested the previous evening at the Railway Station at Thurles. | |
| 12-Aug-1848 | | Commitment to Kilmainham gaol of Meagher, O'Donoghue, and Leyne for High Treason. | |
| 14-Aug-1848 | | Conviction of John Martin for felonious publications in The Irish Felon newspaper, and sentenced to 10 years' transportation. | |
| 1-Nov-1848 | | Conviction of Kevin Izod O'Doherty for felonious publications in The Tribune newspaper ; sentence of 10 years' transportation passed on him. William Smith O'Brien, Thomas Francis Meagher, T. B. McManus, and Patrick O'Donohoe, prisoners who were found guilty of High Treason, and sentenced to death at the September Special Commission, Clonmel, brought to Dublin and lodged in Kilmainham gaol, pending their appeal to the Court of Queen's Bench. Prisoners being heard by counsel, the judgment of the Court on the errors assigned was postponed until Hilary term January, 1849. | |
| 16-Jan-1849 | | The Court of Queen's Bench gave judgment on the writs of error sued out by the State Prisoners convicted of High Treason at Clonmel and confirmed the judgment of the Court below. | |
| Apr-1849 | | The cholera broke out in this month in the city, and continued to rage with intermitting violence till late in October, when the cholera hospitals wore finally closed. | |
| 14-Apr-1849 | | Mr. Charles Gavan Duffy, of the Nation newspaper, discharged from custody on bail, having been tried for Treason-Felony, the jury disagreeing to a verdict. | |