| Date | | | |
| 1420 | | A parliament held in Dublin, which sat sixteen days, and granted the lord lieutenant 700 marks. | |
| 1421 | | A parliament held in Dublin, which sat eighteen days, and sent deputies to London for the redress of national grievances. | |
| 1423 | | A concordatum for £19 17s 14d. granted to the citizens of Dublin for their expenses in fitting out a military force against the Irish of Louth, who dispersed on the news of the preparations made against them. | |
| 1426 | | Twenty pounds granted to the citizens for their services against the Irish. | |
| 1428 | | The Old bridge built by the Dominican Friars, who levied a toll of Id. for every carriage or beast of burden that crossed it. | |
| 1431 | | McDorogh, dynast of Leinster, makes an incursion into the English pale, and defeats the forces sent against him, but is finally defeated with great loss. | |
| 1434 | | The mayor and citizens do penance for violating the privileges and abusing the abbot of St. Mary's. | |
| 1439 | | A plague in Dublin, which carried off 3,000 persons. | |
| 1446 | | Thomas Fitzgerald, prior of Kilmainham, having accused James Earl of Ormond of high treason, a trial by combat was appointed at Smithfield; but the quarrel being taken up by the king, was decided without fighting. Also John David, an armourer, having charged his master, William Catur, with treason, a combat took place, in which the latter, being intoxicated, was slain. David was hanged for felony shortly after. | |
| 1447 | | Great numbers died of a plague and famine. | |