James Stevenson Blackwood, 2nd Baron Dufferin and Claneboye (8 July 1755 – 8 August 1836), known as Sir James Blackwood, 3rd Bt from 1799 to 1808, was an Irish politician.
Blackwood was a Member of the Parliament of Ireland for Killyleagh in County Down from 1788 until the Irish Parliament was abolished with the Act of Union in 1801. He was later elected to the British House of Commons, serving as Member of Parliament for the Cornish constituency of Helston from 1807 to 1812, and for Aldeburgh in Suffolk from 1812 to 1818. He then sat in the House of Lords as a representative peer for Ireland from 1820 to 1836. He was High Sheriff of Down for 1804.
Through his mother, Dorcas Blackwood, 1st Baroness Dufferin and Claneboye, he became the senior representative and heir general of James Hamilton, 1st Earl of Clanbrassil. He succeeded her in 1808 as the 2nd Baron. His father was Sir John Blackwood, 2nd Baronet.
He was married on 15 November 1801 to Anne Dorothea, the only daughter of John Foster, 1st Baron Oriel. He died on 8 August 1836 and was succeeded by his brother Hans. Lady Blackwood died on 28 March 1865 aged 93. They had no children.
| Parliament of Ireland | ||
|---|---|---|
| Preceded by Sir John Blackwood, 2nd Bt Robert Blackwood |
Member of Parliament for Killyleagh 1788 – 1801 With: Sir John Blackwood, 2nd Bt 1788–1790, 1798–1799 Hon. Robert Ward 1790–1798 Hans Blackwood 1799–1800 Daniel Mussenden 1800–1801 |
Succeeded by Parliament of the United Kingdom |
| Parliament of the United Kingdom | ||
| Preceded by John St Aubyn Richard Richards |
Member of Parliament for Helston 1807 – 1812 With: John St Aubyn |
Succeeded by William Horne Hugh Hammersley |
| Preceded by Sir John Aubrey, Bt Sandford Graham |
Member of Parliament for Aldeburgh 1812 – 1818 With: Andrew Strahan |
Succeeded by Samuel Walker Joshua Walker |
| Peerage of Ireland | ||
| Preceded by Dorcas Blackwood |
Baron Dufferin and Claneboye 1808–1836 |
Succeeded by Hans Blackwood |
| Baronetage of Ireland | ||
| Preceded by John Blackwood |
Baronet (of Killyleagh) 1799 – 1836 |
Succeeded by Hans Blackwood |