John Bligh, 3rd Earl of Darnley

John Bligh, 3rd Earl of Darnley (1 October 1719 – 31 July 1781), styled The Hon. John Bligh between 1721 and 1747, lord of the Manor of Cobham, Kent, was a British parliamentarian.

Bligh was the son of John Bligh, 1st Earl of Darnley and Lady Theodosia Hyde, later Baroness Clifton (in her own right). He was born in 1719, near Gravesend, Kent, and at the age of eight was sent to Westminster School. He matriculated at Merton College on 13 May 1735 and was created MA on 13 July 1738.

Bligh served as Member of Parliament (MP) for Maidstone from 1741 to 1747 and for Athboy in the Irish House of Commons from 1739 to 1747.

Lord Darnley married Mary Stoyte on 11 September 1766. They had seven children:

• John Bligh, 4th Earl of Darnley (30 June 1767 – 17 March 1831)
• General Hon. Edward Bligh (19 September 1769 – 2 November 1840)
• Lady Mary Bligh (d. 4 March 1796), married Sir Lawrence Palk, 2nd Baronet on 7 August 1789, without issue
• Lady Theodosia Bligh (February 1771 – 21 January 1840), married Thomas Cherburgh Bligh, her second cousin once removed, and had issue
• Lady Sarah Bligh (10 February 1772 – April 1797)
• Lady Catherine Bligh (1775 – 11 February 1812), married Charles Stewart in 1804 and had issue
• Colonel Hon. William Bligh (25 September 1775 – 8 August 1845), married Lady Sophia Stewart, daughter of John Stewart, 7th Earl of Galloway, and had one daughter Sophia who married to Henry William Parnell {1809-1896} in 1835 whose father Henry Parnell, 1st Baron Congleton was a Great uncle of Charles Stewart Parnell.