Barclay of Pierston, Ayrshire (22 October 1668)

Created in the Baronetage of Nova Scotia.

• Sir Robert Barclay, 1st Baronet (d. 1694)
• Sir Robert Barclay, 2nd Baronet (1658-1717)
• Sir Robert Barclay, 3rd Baronet (d. 1728)
• Sir James Barclay, 4th Baronet (d. 1755)
• Sir William Bloyes Barclay, 5th Baronet (c.1710-1756)
• Sir William Barclay, 6th Baronet (1748-1769)
• Sir James Mantle Barclay, 7th Baronet (1750-1793)
• Sir Robert Barclay, 8th Baronet
  Sir Robert Barclay, 8th Baronet
  Sir Robert Barclay, 8th Baronet was Whig MP for Newtown 1802–1806 and 1806–1807....
  
   (1755-1839)
• Sir Robert Barclay, 9th Baronet (1819-1859)
• Sir David William Barclay, 10th Baronet (1804-1888)
• Sir Colville Arthur Durell Barclay, 11th Baronet (1829-1896)
• Sir David Edward Durell Barclay, 12th Baronet (1858-1918)
• Sir Robert Cecil de Belzim Barclay, 13th Baronet (1862-1930)
• Sir Colville Herbert Sanford Barclay, 14th Baronet (1913–2010)
• Sir Robert Colraine Barclay, 15th Baronet (b. 1950)