Marquess Thomond is in Marquis and Marquess Ireland.
In December 1800 King George III of Great Britain and Ireland [aged 62] created a number of peers who supported the Act of Union...
On 21st December 1800 Charles Stanley Monck 1st Viscount Monck [aged 46] was created 1st Viscount Monck.
On 29th December 1800....
Murrough O'Brien 1st Marquess Thomond [aged 74] was created 1st Marquess Thomond. Mary Palmer Marchioness Thomond [aged 50] by marriage Marchioness Thomond.
Charles Tottenham aka Loftus 1st Marquess Ely [aged 62] was created 1st Marquess Ely in County Wexford. Jane Myhill Marchioness Ely by marriage Marchioness Ely in County Wexford.
James Alexander 1st Earl Caledon [aged 70] was created 1st Earl Caledon in County Tyrone.
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.