Marquess of Carmarthen

==Holders==
 	From 	Until 	Name 	Lifespan
1. 	9 April 1689 	26 July 1712 	The Most Noble Thomas Osborne, 1st Duke of Leeds, K.G., P.C. 	1632-1712
2. 	26 July 1712 	25 June 1729 	Vice-Admiral The Most Noble Peregrine Osborne, 2nd Duke of Leeds 	1659-1729
3. 	25 June 1729 	9 May 1731 	The Most Noble Peregrine Hyde Osborne, 3rd Duke of Leeds 	1691-1731
4. 	9 May 1731 	23 March 1789 	The Most Noble Thomas Osborne, 4th Duke of Leeds, K.G., P.C. 	1713-1789
5. 	23 March 1789 	31 January 1799 	The Most Noble Francis Godolphin Osborne, 5th Duke of Leeds, K.G., P.C. 	1751-1799
6. 	31 January 1799 	10 July 1838 	The Most Noble George William Frederick Osborne, 6th Duke of Leeds, K.G., P.C. 	1775-1838
7. 	10 July 1838 	4 May 1859 	The Most Noble Francis George Godolphin D'Arcy D'Arcy-Osborne, 7th Duke of Leeds	1798-1859
8. 	4 May 1859 	8 August 1872 	The Most Noble George Godolphin Osborne, 8th Duke of Leeds 	1802-1872
9. 	8 August 1872 	23 December 1895	The Most Noble George Godolphin Osborne, 9th Duke of Leeds, D.L. 	1828-1895
10.	23 December 1895	10 May 1927 	The Most Noble George Godolphin Osborne, 10th Duke of Leeds 	1862-1927
11.	10 May 1927 	26 July 1963 	The Most Noble John Francis Godolphin Osborne, 11th Duke of Leeds 	1901-1963
12.	26 July 1963 	20 March 1964 	The Most Noble Francis D'Arcy Godolphin Osborne, 12th Duke of Leeds, K.C.M.G. 	1884-1964
==Other Titles==
===Peerage of England===
*Duke of Leeds (1694), 1694-1964
*Earl of Danby (1674), 1689-1964
*Viscount Latimer (1673), 1689-1964
*Baron Conyers (1509), 1799-1859
*Baron Osborne (1673), 1689-1713, 1729-1776, 1789-1838, 1838-1964
===Peerage of Scotland===
*Viscount Osborne (1673), 1712-1964
===Peerage of the United Kingdom===
*Baron Godolphin (1832), 1859-1964