| Earl of Kerry, 1753 |
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| Thomas FitzMaurice1668–17411st Earl of Kerry,21st Baron Kerry |
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| Viscount FitzMaurice and Baron Dunkeron, 1751Earl of Shelburne (2nd creation), 1753Baron Wycombe, 1760 |
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| William FitzMaurice1694–17472nd Earl of Kerry,22nd Baron Kerry |
John Petty-Fitzmaurice1706–17611st Earl of Shelburne, Viscount FitzMaurice, Baron Dunkeron, and Baron Wycombe |
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| Marquess of Lansdowne, Earl of Wycombe, and Viscount Calne and Calston, 1784 |
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| Francis Thomas-Fitzmaurice1740–18183rd Earl of Kerry,23rd Baron Kerry |
William Petty-Fitzmaurice1737–18051st Marquess of Lansdowne, Earl of Wycombe, and Viscount Calne and Calston,2nd Earl of Shelburne, Viscount FitzMaurice, Baron Dunkeron, and Baron Wycombe |
Baron Nairne |
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| Baron Keith (1st creation: Ireland), 1797Baron Keith (2nd creation: UK), 1801Baron Keith (3rd creation: UK), 1803Viscount Keith (UK), 1814 |
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| John Henry Petty1765–18092nd Marquess of Lansdowne, Earl of Wycombe, and Viscount Calne and Calston,3rd Earl of Shelburne, Viscount FitzMaurice, Baron Dunkeron, and Baron Wycombe |
George Keith Elphinstone1746–1823Viscount Keith, Baron Keith (Ire, UK, UK) |
Jane Mercer |
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| Viscountcy Keith and Barony Keith (1st creation) extinct, 1801 |
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| Henry Petty-Fitzmaurice1780–18633rd Marquess of Lansdowne, Earl of Wycombe, and Viscount Calne and Calston,4th Earl of Shelburne, Viscount FitzMaurice, Baron Dunkeron, and Baron Wycombe4th Earl of Kerry, 24th Baron Kerry |
Margaret Mercer Elphinstone1788–1867Comtesse de Flahaut, 2nd Baroness Keith (Ire, UK), 7th Lady Nairne |
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| Baronies Keith (2nd & 3rd creations) extinct, 1867 |
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| Henry Thomas Petty-Fitzmaurice1816–18664th Marquess of Lansdowne, Earl of Wycombe, and Viscount Calne and Calston,5th Earl of Shelburne, Viscount FitzMaurice, Baron Dunkeron, and Baron Wycombe5th Earl of Kerry, 24th Baron Kerry |
Emily Jane Petty-FitzMaurice1819–18958th Lady Nairne |
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| Baron Mersey, 1910Viscount Mersey, 1916 |
Baron Fitzmaurice, 1906 |
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| John Charles Bigham1840–19291st Viscount Mersey |
Henry Charles Keith Petty-Fitzmaurice1845–19275th Marquess of Lansdowne, Earl of Wycombe, and Viscount Calne and Calston,6th Earl of Shelburne, Viscount FitzMaurice, Baron Dunkeron, and Baron Wycombe, 6th Earl of Kerry, 24th Baron Kerry, 9th Lord Nairne |
Edmond Fitzmaurice1846–1935Baron Fitzmaurice |
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| Barony Fitzmaurice extinct, 1935 |
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| Charles Clive Bigham1872–19562nd Viscount Mersey |
Henry William Edmund Petty-Fitzmaurice1872–19366th Marquess of Lansdowne, Earl of Wycombe, and Viscount Calne and Calston,7th Earl of Shelburne, Viscount FitzMaurice, Baron Dunkeron, and Baron Wycombe, 7th Earl of Kerry, 25th Baron Kerry, 10th Lord Nairne |
Charles Fitzmaurice1874–1914 |
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| Edward Clive Bigham1906–19793rd Viscount Mersey |
Katherine Bigham1912–199512th Lady Nairne |
Charles Hope Petty-Fitzmaurice1917–19447th Marquess of Lansdowne, Earl of Wycombe, and Viscount Calne and Calston,8th Earl of Shelburne, Viscount FitzMaurice, Baron Dunkeron, and Baron Wycombe, 8th Earl of Kerry, 26th Baron Kerry, 11th Lord Nairne |
George John Charles Mercer Nairne Petty-Fitzmaurice1912–19998th Marquess of Lansdowne, Earl of Wycombe, and Viscount Calne and Calston,9th Earl of Shelburne, Viscount FitzMaurice, Baron Dunkeron, and Baron Wycombe, 9th Earl of Kerry, 27th Baron Kerry |
| Richard Maurice Clive Bigham1934–20064th Viscount Mersey, 13th Lord Nairne |
David Edward Hugh Bighamb. 1938_Heir apparent to the Viscountcy Mersey_ |
Charles Maurice Petty-Fitzmauriceb. 19419th Marquess of Lansdowne, Earl of Wycombe, and Viscount Calne and Calston,10th Earl of Shelburne, Viscount FitzMaurice, Baron Dunkeron, and Baron Wycombe, 10th Earl of Kerry, 28th Baron Kerry |
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| Edward John Hallam Bighamb. 19665th Viscount Mersey, 14th Lord Nairne |
Charles Richard Petty Bighamb. 1967_Heir apparent in the heir presumptive to the Viscountcy Mersey_ |
Simon Henry George Petty-Fitzmauriceb. 1970_styled Earl of Kerry_ |
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| Flora Bigham, Mistress of Nairneb. 2003_styled Mistress of Nairne_ |
George Henry Charles Petty-Fitzmauriceb. 2020_styled Viscount Calne and Calston_ |
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