SIR JOHN BLACKWOOD, BARONET, of Ballyleidy, County Down, married Dorcas, eldest daughter and heiress of James Stevenson, of Killyleagh, which lady was created a peeress in 1800, after his decease, by the title of BARONESS DUFFERIN AND CLANEBOYE, of Ballyleidy and Killyleagh, County Down.
He had issue,
Robert, MP for Killyleagh; died unmarried;The youngest son,
James Stevenson, 2nd Baron Dufferin and Claneboye;
John (Rev), in holy orders;
Hans, 3rd Baron Dufferin and Claneboye;
HENRY, of whom we treat;
Anne; Sophia; Dorcas; Catherine.
VICE-ADMIRAL SIR HENRY BLACKWOOD GCH KCB, who, having attained high rank in the Royal Navy, was created a baronet in 1814.
His second wife was Eliza, fourth daughter of Captain Martin Waghorn RN, by whom he had an only son,
HENRY MARTIN, his successor.Sir Henry wedded thirdly, in 1808, Harriet, daughter of Francis Gore, and by that lady had,
Arthur Johnstone;Sir Henry, bearer of the dispatches announcing the decisive victory of Trafalgar, died in 1832, and was succeeded by his eldest son,
Francis Price, Commander RN;
SIR HENRY MARTIN BLACKWOOD (1801-51), 2nd Baronet, a captain in the Royal Navy, who married, in 1826, Harriet Louisa, youngest daughter of John Matthew Bulkeley, and had issue, with three other daughters,
HENRY, 3rd Baronet;His eldest son,
FRANCIS, 4th Baronet;
SIR HENRY BLACKWOOD (1828-54), 3rd Baronet, a lieutenant in the Royal Navy, died unmarried and was succeeded by his brother,
Sir Francis Blackwood, 4th Baronet (1838–1924), a captain in the Royal Navy, who espoused firstly, in 1861, Laura Olivia, daughter of Robert Samuel Palmer, and had issue,
HENRY ROBERT TEMPLE (1862-1910), father of 5th and 6th Baronets;He wedded secondly, in 1871, Dorothea Frances, daughter of the Rev Henry Quicke, by whom he had issue,
Francis Edward;Sir Francis was succeeded by his grandson,
Maurice Baldwin Raymond;
Sir Henry Palmer Temple Blackwood, 5th Baronet (1896–1948), who fought in the 1st World War with the Canadian Expeditionary Force; who was succeeded by his brother,
Sir Francis Elliot Temple Blackwood, 6th Baronet (1901-79), assistant vice-president of Crocker-Citizens' National Bank, Sacramento, California, USA.
He died without male issue.
Sir Francis George Blackwood, 7th Baronet (1916-91) succeeded as the Baron Dufferin and Claneboye in 1988.
After the extinction of the male line of 4th Baron Dufferin and Claneboye (and the entirety of the Marquessate of Dufferin and Ava), the barony of Dufferin and Claneboye reverted to the male line of the youngest son of the first baroness, viz. the Blackwood Baronets of the Navy.
The 11th Baron Dufferin and Claneboye, who lives in Australia, is therefore the 8th Baronet.
First published in November, 2010.