There have been seven baronetcies created for persons with the surname Sinclair, six in the

Baronetage of Nova Scotia Baronets are a rank in the British aristocracy. The current Baronetage of the United Kingdom has replaced the earlier but existing Baronetages of England, Nova Scotia, Ireland, and Great Britain. Baronetage of England (1611–1705) King James ...

and one in the Baronetage of Great Britain. Four of the creations are extant as of 2008. The Sinclair Baronetcy, of Dunbeath in the County of Caithness, was created in the Baronetage of Nova Scotia on 3 January 1631 for John Sinclair. The title became extinct on his death in circa 1652. The Sinclair Baronetcy, of Canisbay in the County of Caithness, was created in the Baronetage of Nova Scotia on 2 June 1631 for James Sinclair, a great-grandson of the fourth

Earl of Caithness Earl of Caithness is a title that has been created several times in the Peerage of Scotland, and it has a very complex history. Its first grant, in the modern sense as to have been counted in strict lists of peerages, is now generally held to have ...

. The seventh Baronet succeeded as twelfth

in 1789. See this title for further history of the baronetcy. The Sinclair, later Sinclair-Lockhart Baronetcy, of Murkle in the County of Caithness and of Stevenston in the County of Haddington, was created in the Baronetage of Nova Scotia on 18 June 1636. For more information on this creation, see Sinclair-Lockhart Baronets. The Sinclair Baronetcy, of Longformacus in the County of Berwick, was created in the Baronetage of Nova Scotia on 10 December 1664 for Robert Sinclair. The title became either extinct or dormant on the death of the seventh Baronet in circa 1843. The Sinclair Baronetcy, of Kinnaird in the County of Fife, was created in the Baronetage of Nova Scotia in circa 1675 for James Sinclair. Sir John Sinclair, 4th Baronet (born 1763) succeeded in the title in 1767 but nothing further is known about him or the baronetcy. The Sinclair Baronetcy, of Dunbeath in the County of Caithness, was created in the Baronetage of Nova Scotia on 12 October 1704 for James Sinclair, with remainder to his heirs male whatsoever. He was a descendant of George Sinclair, 4th Earl of Caithness. On the death of the fifth Baronet in 1842 the line of the first Baronet failed. The title was assumed by John Sinclair, of Barrock, great-great-grandson of George Sinclair of Barrock, brother of the first Baronet. The seventh Baronet was Vice-

Lord-Lieutenant of Caithness The Lord Lieutenant of Caithness is the British monarch's personal representative in an area defined since 1975 as consisting of the local government district of Caithness, in Scotland. This definition was renewed by the Lord-Lieutenants (Scotland ...

. The eighth baronet was the father of politician

Susan Cunliffe-Lister, Baroness Masham of Ilton Susan Lilian Primrose Cunliffe-Lister, Dowager Countess of Swinton, Baroness Masham of Ilton, (''née'' Sinclair; born ) is a crossbench member of the House of Lords. She is the senior life peer. She is Vice President of the Snowdon Trust, f ...

. As of 2011 the eleventh and present Baronet, Jonathan Sinclair, is second in line of succession to the earldom of Caithness.

John Sinclair, 1st Baron Pentland John Sinclair, 1st Baron Pentland, (7 July 1860 – 11 January 1925) was a Scottish Liberal Party politician, soldier, peer, administrator and Privy Councillor who served as the Secretary of Scotland from 1905 to 1912 and the Governor of M ...

, was the eldest son of Captain George Sinclair, youngest son of the sixth Baronet (see the

Baron Pentland Baron Pentland, of Lyth in the County of Caithness, was title in the Peerage of the United Kingdom. It was created in 1909 for the Scottish Liberal politician John Sinclair. He later served as Governor of Madras. Lord Pentland was the son of C ...

, is the daughter of the eighth Baronet and the sister of the ninth Baronet. The Sinclair Baronetcy, of Ulbster in the County of Caithness, was created in the Baronetage of Great Britain on 14 February 1786. For more information on this creation, see the

Viscount Thurso Viscount Thurso, of Ulbster in the County of Caithness, is a title in the Peerage of the United Kingdom. It was created on 11 June 1952 for the Scottish Liberal politician and former Secretary of State for Air, Sir Archibald Sinclair, 4th Ba ...

Sinclair baronets, of Dunbeath (1631)

*Sir John Sinclair, 1st Baronet (died )

Sinclair baronets, of Canisbay (1631)

*Sir James Sinclair, 1st Baronet (died 1662) *Sir William Sinclair, 2nd Baronet (died ) *Sir James Sinclair, 3rd Baronet (died c. 1710) *Sir James Sinclair, 4th Baronet (died c. 1730) *Sir James Sinclair, 5th Baronet (died 1760) *Sir John Sinclair, 6th Baronet (died 1774) * Sir James Sinclair, 7th Baronet (1766–1823) (succeeded as Earl of Caithness in 1789) ''see the

for further succession''

Sinclair, later Sinclair-Lockhart, baronets of Stevenson, East Lothian (1636)

*see Sinclair-Lockhart baronets

Sinclair baronets, of Longformacus (1664)

*Sir Robert Sinclair, 1st Baronet (died 1678) *Sir John Sinclair, 2nd Baronet (died after 1696) *Sir Robert Sinclair, 3rd Baronet (died 1727) *Sir John Sinclair, 4th Baronet (died 1764) *Sir Harry Sinclair, 5th Baronet (died 1768) *Sir John Sinclair, 6th Baronet (died 1798) *Sir John Sinclair, 7th Baronet (died c. 1843)

Sinclair baronets, of Kinnaird (c. 1675)

*Sir James Sinclair, 1st Baronet (died ) *Sir George Sinclair, 2nd Baronet (died 1726) *Sir John Sinclair, 3rd Baronet (died 1767) *Sir John Sinclair, 4th Baronet (born 1763) ''Nothing further is known of this title''

Sinclair baronets, of Dunbeath (1704)

* Sir James Sinclair, 1st Baronet (died 1742) * Sir William Sinclair, 2nd Baronet (died 1767) *

Sir Alexander Sinclair, 3rd Baronet ''Sir'' is a formal honorific address in English for men, derived from Sire in the High Middle Ages. Both are derived from the old French "Sieur" (Lord), brought to England by the French-speaking Normans, and which now exist in French only as ...

(died 1786) * Sir Benjamin Sinclair, 4th Baronet (died 1796) *

Sir John Sinclair, 5th Baronet ''Sir'' is a formal honorific address in English for men, derived from Sire in the High Middle Ages. Both are derived from the old French "Sieur" (Lord), brought to England by the French-speaking Normans, and which now exist in French only as ...

(died 1842) *

Sir John Sinclair, 6th Baronet ''Sir'' is a formal honorific address in English for men, derived from Sire in the High Middle Ages. Both are derived from the old French "Sieur" (Lord), brought to England by the French-speaking Normans, and which now exist in French only as ...

(1794–1873) *

Sir John Rose George Sinclair, 7th Baronet ''Sir'' is a formal honorific address in English for men, derived from Sire in the High Middle Ages. Both are derived from the old French "Sieur" (Lord), brought to England by the French-speaking Normans, and which now exist in French only as ...

(1864–1926) *

Sir Ronald Norman John Charles Udny Sinclair, 8th Baronet ''Sir'' is a formal honorific address in English for men, derived from Sire in the High Middle Ages. Both are derived from the old French "Sieur" (Lord), brought to England by the French-speaking Normans, and which now exist in French only as ...

(1899–1952) *

Sir John Rollo Norman Blair Sinclair, 9th Baronet ''Sir'' is a formal honorific address in English for men, derived from Sire in the High Middle Ages. Both are derived from the old French "Sieur" (Lord), brought to England by the French-speaking Normans, and which now exist in French only as ...

(1928–1990) *

Sir Patrick Robert Richard Sinclair, 10th Baronet ''Sir'' is a formal honorific address in English for men, derived from Sire in the High Middle Ages. Both are derived from the old French "Sieur" (Lord), brought to England by the French-speaking Normans, and which now exist in French only as ...

(1936–2011) *

Sir William Robert Francis Sinclair, 11th Baronet ''Sir'' is a formal honorific address in English for men, derived from Sire in the High Middle Ages. Both are derived from the old French "Sieur" (Lord), brought to England by the French-speaking Normans, and which now exist in French only as ...

(born 1979)

Sinclair baronets, of Ulbster (1786)

*see the

Notes

References

*Kidd, Charles, Williamson, David (editors). ''Debrett's Peerage and Baronetage'' (1990 edition). New York: St Martin's Press, 1990, * {{Use dmy dates, date=March 2012 Baronetcies in the Baronetage of Nova Scotia Extinct baronetcies in the Baronetage of Nova Scotia Baronetcies in the Baronetage of Great Britain 1631 establishments in Nova Scotia 1786 establishments in Great Britain