A peerage of the Kingdom of Great Britain.
Letters patent issued on Tue 20th May 1760
To John Petty as Hereditary peerage (already peer of Ireland).
|Number||Surname||Forenames||Held from||Held to|
|1st||Petty||John||Tue 20th May 1760||Thu 14th May 1761|
|2nd||Petty||William||Thu 14th May 1761||Tue 7th May 1805|
|3rd||Petty||John Henry||Tue 7th May 1805||Wed 15th Nov 1809|
|4th||Petty-Fitzmaurice||Henry||Wed 15th Nov 1809||Mon 14th Jul 1856|
|5th||Petty-Fitzmaurice||Henry Thomas||Mon 14th Jul 1856||Thu 5th Jul 1866|
|6th||Petty-Fitzmaurice||Henry Charles Keith||Thu 5th Jul 1866||Fri 3rd Jun 1927|
|7th||Petty-Fitzmaurice||Henry William Edmund||Fri 3rd Jun 1927||Thu 5th Mar 1936|
|8th||Petty-Fitzmaurice||Charles Hope||Thu 5th Mar 1936||Sun 20th Aug 1944|
|9th||Mercer Nairne Petty-Fitzmaurice||George John Charles||Sun 20th Aug 1944||Wed 25th Aug 1999|
|10th||Mercer Nairne Petty-Fitzmaurice||Charles Maurice||Wed 25th Aug 1999||-|