Earl Inchiquin is in Earl Ireland.
In May 1654 Murdough O'Brien 1st Earl Inchiquin [aged 40] was created 1st Earl Inchiquin. Elizabeth St Leger Countess Inchiquin by marriage Countess Inchiquin.
On 9th September 1674 Murdough O'Brien 1st Earl Inchiquin [aged 60] died. He was buried at St Mary's Cathedral, Limerick, County Limerick. His son William [aged 34] succeeded 2nd Earl Inchiquin.
Before 27th December 1683 William O'Brien 2nd Earl Inchiquin [aged 43] and Margaret Boyle Countess Inchiquin [aged 39] were married. She by marriage Countess Inchiquin. She the daughter of Roger Boyle 1st Earl Orrery and Margaret Howard Countess Orrery [aged 61]. He the son of Murdough O'Brien 1st Earl Inchiquin and Elizabeth St Leger Countess Inchiquin.
In or after 1684 William O'Brien 2nd Earl Inchiquin [aged 44] and Elizabeth Brydges Countess Inchiquin [aged 32] were married. She by marriage Countess Inchiquin. He the son of Murdough O'Brien 1st Earl Inchiquin and Elizabeth St Leger Countess Inchiquin.
On 16th January 1692 William O'Brien 2nd Earl Inchiquin [aged 52] died in Jamaica. His son William [aged 30] succeeded 3rd Earl Inchiquin. Mary Villiers Countess Inchiquin by marriage Countess Inchiquin.
On 24th December 1719 William O'Brien 3rd Earl Inchiquin [aged 57] died. His son William [aged 19] succeeded 4th Earl Inchiquin.
On 29th March 1720 William O'Brien 4th Earl Inchiquin [aged 20] and Anne Hamilton 2nd Countess Orkney and Inchiquin were married. She by marriage Countess Inchiquin. She the daughter of George Hamilton 1st Earl Orkney [aged 54] and Elizabeth Villiers Countess Orkney [aged 63]. He the son of William O'Brien 3rd Earl Inchiquin and Mary Villiers Countess Inchiquin. They were first cousins.
On 18th July 1777 Murrough O'Brien 1st Marquess Thomond [aged 51] succeeded 5th Earl Inchiquin. Mary O'Brien 3rd Countess Orkney and Inchquin [aged 56] by marriage Countess Inchiquin.
On 10th February 1808 Murrough O'Brien 1st Marquess Thomond [aged 82] died. His nephew William [aged 43] succeeded 2nd Marquess Thomond, 6th Earl Inchiquin. Rebecca Trotter Marchioness Thomond [aged 33] by marriage Marchioness Thomond.
On 21st August 1846 William O'Brien 2nd Marquess Thomond [aged 81] died. His brother James [aged 77] succeeded 3rd Marquess Thomond, 7th Earl Inchiquin.