There have been three baronetcies created for persons with the surname Foster, all in the Baronetage of the United Kingdom. Two of the creations are extinct.
The Foster Baronetcy, of Glyde Court in the County of Louth, was created in the Baronetage of the United Kingdom on 30 September 1831 for the diplomat Augustus Foster. The title became extinct on the death of the fourth Baronet in 1947.
The Foster Baronetcy, of Norwich in the County of Norfolk, was created in the Baronetage of the United Kingdom on 3 August 1838 for William Foster. The title became extinct on the death of the fourth Baronet in 1960.
The Foster Baronetcy, of Bloomsbury in the County of London, was created in the Baronetage of the United Kingdom on 5 February 1930 for the university administrator and educationalist Gregory Foster. He was Provost of University College London between 1907 and 1929 and Vice-Chancellor of the University of London between 1928 and 1930.
The last baronet's sister Alice was paternal grandmother of Anna Wintour.
The baronetcy became extinct in 1947.
The heir apparent to the baronetcy is Thomas James Gregory (born 1991), son of the 4th Baronet.
Duke of Devonshire is a title in the Peerage of England held by members of the Cavendish family. This branch of the Cavendish family has been one of the wealthiest British aristocratic families since the 16th century and has been rivalled in political influence perhaps only by the Marquesses of Salisbury and the Earls of Derby.
Earl of Buckinghamshire is a title in the Peerage of Great Britain. It was created in 1746 for John Hobart, 1st Baron Hobart.
Baron Waterpark of Waterpark in the County of Cork, is a title in the Peerage of Ireland. It was created in 1792 for Sarah, Lady Cavendish, in honour of her husband, Sir Henry Cavendish, 2nd Baronet. Sir Henry Cavendish was a politician who represented Lismore and Killybegs in the Irish House of Commons and served as Vice-Treasurer of Ireland and as Receiver-General of Ireland. From 1768 to 1774 he sat in the British House of Commons for Lostwithiel. Cavendish and Lady Waterpark were both succeeded by their son Richard, the second Baron and third Baronet. His eldest son, the third Baron, represented Knaresborough, Derbyshire South and Lichfield in the House of Commons as a Liberal and served as a Lord-in-waiting under Lord John Russell, Lord Aberdeen and Lord Palmerston. This line of the family failed on the death of his grandson, the fifth Baron, in 1932. The late Baron was succeeded by his second cousin, the sixth Baron. He was the grandson of a younger son of the second Baron. As of 2013, the titles are held by the latter's great-nephew, the eighth Baron, who succeeded in that year.
There have been seven baronetcies created for members of the Lowther family, one in the Baronetage of Nova Scotia, two in the Baronetage of England, two in the Baronetage of Great Britain and two in the Baronetage of the United Kingdom. Two of the creations are extant as of 2008.
There have been two baronetcies created for persons with the surname Hobart, one in England and one in the United Kingdom.
There have been two baronetcies created for a person with the surname Clifford.
There have been six Baronetcies created for persons with the surname Brown, one in the Baronetage of Nova Scotia, one in the Baronetage of England, two in the Baronetage of Great Britain and two in the Baronetage of the United Kingdom. Two creations are extant as of 2010.
Elizabeth Christiana Cavendish, Duchess of Devonshire was an English aristocrat and letter writer. She is best known as Lady Elizabeth Foster, the close friend of Georgiana Cavendish, Duchess of Devonshire. Elizabeth supplanted the Duchess, gaining the affections of William Cavendish, 5th Duke of Devonshire and later marrying him. Several of her letters are preserved.
There have been three baronetcies created for members of the Gore family, all in the Baronetage of Ireland. All three titles are extant. The family also holds two earldoms and a barony.
There have been six baronetcies created for persons with the surname Brooke, one in the Baronetage of England, one in the Baronetage of Ireland and four in the Baronetage of the United Kingdom. As of 2015 four of the creations are extant, though one has been subsumed into a peerage.
There have been twenty baronetcies created for persons with the surname Williams, eight in the Baronetage of England, three in the Baronetage of Great Britain and nine in the Baronetage of the United Kingdom. Only five of the creations are extant as of 2017..
There have been seventeen baronetcies for persons with the surname Stewart, ten in the Baronetage of Nova Scotia, one in the Baronetage of Ireland and six in the Baronetage of the United Kingdom. See also Steuart baronets, Henderson-Stewart baronets, MacTaggart-Stewart baronets and Stewart-Clark baronets.
There have been five baronetcies created for persons with the surname Fraser, one in the Baronetage of Nova Scotia and four in the Baronetage of the United Kingdom. As of 2007 four of the creations are extinct while one is extant.
There have been seven baronetcies created for persons with the surname Watson, one in the Baronetage of England, one in the Baronetage of Great Britain and five in the Baronetage of the United Kingdom. One creation is extant as of 2016.
There have been three baronetcies created for persons with the surname Clayton, two in the Baronetage of Great Britain and one in the Baronetage of the United Kingdom. One creation is extant as of 2021.
There has been six baronetcies created for persons with the surname Shaw, one in the Baronetage of England, one in the Baronetage of Nova Scotia and four in the Baronetage of the United Kingdom. Two of the creations extant as of 2010.
Sir Augustus John Foster, 1st Baronet, was a British diplomat and politician. Born into a notable British family, Foster served in a variety of diplomatic functions in continental Europe and the United States, interrupted by a short stint as a Member of Parliament. He wrote about his American experiences in Notes on the United States of America.
The Lockhart, later Lockhart-Ross Baronetcy, of Carstairs in the County of Lanark, was a title in the Baronetage of Nova Scotia.
There have been two baronetcies created for persons with the surname Congreve, both in the Baronetage of the United Kingdom. Both creations are extinct.
Vere Henry Louis Foster was an English educationist and philanthropist.