Holders

• 1 William Sinclair, Earl of Orkney and Caithness
• 2 William Sinclair, 2nd Earl of Caithness * < 1476
• 3 John Sinclair, 3rd Earl of Caithness * < 1510
• 4 George Sinclair, 4th Earl of Caithness * < 1527
• 5 George Sinclair, 5th Earl of Caithness * 1566
• 6 George Sinclair, 6th Earl of Caithness * < 1639
• 7 George Sinclair, 7th Earl of Caithness * 1698
• 8 John Sinclair, 8th Earl of Caithness
• 9 Alexander Sinclair, 9th Earl of Caithness * 1685
• 10 William Sinclair, 10th Earl of Caithness * 1727
• 11 John Sinclair, 11th Earl of Caithness * 1757
• 12 James Sinclair, 12th Earl of Caithness * 1766
• 13 Alexander Campbell Sinclair, 13th Earl of Caithness * 1790
• 14 James Sinclair, 14th Earl of Caithness * 1821
• 15 George Philips Alexander Sinclair, 15th Earl of Caithness * 1858
• 16 James Augustus Sinclair, 16th Earl of Caithness * 1827
• 17 John Sutherland Sinclair, 17th Earl of Caithness * 1857
• 18 Norman Macleod Buchan of Auchmacoy, 18th Earl of Caithness * 1862
• 19 James Roderick Sinclair, 19th Earl of Caithness * 1906
• 20 Malcolm Ian Sinclair, 20th earl of Caithness * 1948
• John Campbell, 1st Earl of Breadalbane and Holland * c. 1635

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