1621 – He was born on the 25th of April.
– He travelled in France and Italy, and coming home took part in the Bishops Wars against the Scots.
1627 – He was created Baron of Broghill on the 28th of February.
1641 – He returned to Ireland on the outbreak of the rebellion.
1642 – He fought with his brothers against the Irish rebels at the battle of Liscarroll in September.
1650 – On the 10th of May, he completely defeated at Macroom a force of Irish advancing to the relief of Cork, and joining Cromwell assisted in taking the latter place. On Cromwell’s departure for Scotland he co-operated with Henry Ireton, whom he joined at the siege of Limerick.
1651 – He defeated an Irish force marching to Limerick’s relief under Lord Muskerry at the battle of Knocknaclashy, the final battle of the Irish Confederate Wars, thus effecting the capture of the town.
1654-1656 – He was returned to Cromwell’s parliaments as member for the county of Cork, and also in the latter assembly for Edinburgh, for which he elected to sit.
1657 – He served this year as lord president of the council in Scotland, where he won much popularity; and when he returned to England he was included in the inner cabinet of Cromwell’s council, and was nominated a member of the new House of Lords.
1660 – On the 5th of September, he was created earl of Orrery
1661 – He sat for Arundel in the Convention and in the parliament and at the Restoration was taken into great favour.
– On the 25th of November, he was impeached by the House of Commons for "raising of money by his own authority upon his majesty’s subjects," but the prorogation of parliament by the king interrupted the proceedings, which were not afterwards renewed.
1679 – He died on the 26th of October.