| Date | | | |
| 1545 | | The abbey of St. Thomas the martyr, near Kilmainham, granted to Wm. Brabazon, ancestor to the Earl of Meath. | |
| 1546 | | Bernard Fitzpatrick sent his son Teague a prisoner to Dublin, where he was executed. | |
| 1547 | | The Byrnes and O'Tooles defeated by Sir Anthony St. Leger. | |
| 1548 | | The title of bailiffs of Dublin changed to that of sheriffs. John Ryan and Thomas Finiary, the last bailiffs being made the first sheriffs. A mint set up in Dublin., which soon failed for want of bullion. | |
| 1550 | | On Easter Sunday, the Liturgy was read in the English language in Christ Church, and printed next year by Humphry Powell, in Dublin, being supposed to be the first book printed in this city. | |
| 1551 | | The title of Primacy of all Ireland taken from the see of Armagh, and bestowed on that of Dublin. The Bible printed in Dublin. | |
| 1552 | | Contest for military precedence between the mayors of Dublin and Drogheda, during an expedition against O'Reilly, when it was decided that the former, by right, should command the van going out, and the rere returning. A great scarcity; the peck of wheat, about four bushels English, sold for 24s., but the harvest proving plentiful, it fell to 5s. The testoon, or groat of mint money, ordered by proclamation to pass for 2s. | |
| 1553 | | The militia of Dublin took part in an expedition to Dundalk, against O'Neill. The service of the mass restored in Dublin by order of Queen Mary. | |
| 1554 | | Several English Protestants who fled from England to avoid persecution, settled in Dublin. | |
| 1555 | | The plot of ground that contains the head of water which supplies the city was enclosed with stone and lime at the expense of the citizens. | |