This family is of Scottish origin.
a gentleman of respectable lineage in Fife, removed to Ulster some time towards the middle of the 17th century, and, having acquired considerable property, settled in County Down.
Of the Scottish family of BLACKWOOD, the celebrated Adam Blackwood (1539-1613), privy counsellor to MARY, Queen of Scots; and the said JOHN BLACKWOOD, of the same house, had his estate in County Down sequestered, in 1687, by King JAMES II's parliament, but was restored on the accession of WILLIAM III.
Faithfully and zealously attached to his unhappy mistress, this eminent person published, in 1587, his Martyrdom of Mary Stuart, Queen of Scotland.John Blackwood was interred at Bangor Abbey and his grave-stone reads:
HERE LIES [JOHN] BLACKWOOD, MERCHANT, LATE PROVOST OF BANGOR, WHO DEPARTED THIS LYFE THE 22 OF MAY 1663 AND OF AGE 72. HERE LYES A MAN WHO LIV'D OF LATE INTO A FLOORISHING ESTATE YET WAS IT HIS GLORY THAT THERBY HIMSELF HE DID NOT MAGNIFY A SOBER IVST [Just] AND ..... MAN AND THOVGH HIS LIFE WAS BVT A SPAN YET IT SO BLAMELESS WAS THAT HE DESERVES A LASTING MEMORIE.From this gentleman descended
ROBERT BLACKWOOD (1694-1774), in the same county, who was created a baronet in 1763.
Sir Robert married firstly, in 1721, Joyce, sister of Joseph, 1st Earl of Milltown, and had issue,
SIR JOHN BLACKWOOD, 2nd Baronet (1721-99), who married, in 1751, Dorcas, eldest daughter and heiress of James Stevenson, of Killyleagh.
He was succeeded by his eldest surviving son,
SIR JAMES STEVENSON BLACKWOOD, 3rd Baronet (1755–1836), who inherited the peerage at the decease of his mother and succeeded as Baron Dufferin and Claneboye in 1807.
Sir Robert married firstly, in 1721, Joyce Leeson, sister of Joseph, 1st Earl of Milltown, and had,
JOHN, his heir;He espoused secondly, Grace, only daughter of Isaac Macartney, by whom he had,
Leeson, died unmarried, 1773;
Margaret, m to Stewart Banks.
William;Sir Robert was succeeded at his decease by his eldest son,
Dorcas; Sarah; Elizabeth.
SIR JOHN BLACKWOOD MP (1721-99), 2nd Baronet, who wedded, in 1751, Dorcas, eldest daughter and heiress of James Stevenson, of Killyleagh, by whom he had issue,
ROBERT, died unmarried 1786;Sir John died was succeeded by his second, but eldest surviving son,
JAMES, 2nd Baron Dufferin and Claneboye;
John, in holy orders;
HANS, 3rd Baron Dufferin and Claneboye;
Henry, created a baronet;
Anne; Sophia; Dorcas; Catherine.
SIR JAMES STEVENSON BLACKWOOD, 3rd Baronet (1755–1836), who inherited the peerage at the decease of his mother DORCAS, created Baroness Dufferin and Claneboye in 1800, with remainder to her ladyship's male issue by her deceased husband, Sir John Blackwood.
Sir James was MP for Killyleagh from 1788 till the Irish Parliament was abolished in 1801.
He was later MP for the Cornish constituency of Helston, 1807-12; and for Aldeburgh, Suffolk, 1812-18.
He then sat in the House of Lords as a Representative peer for Ireland, 1820-36.
Through his mother, Dorcas, Lady Dufferin, Sir James became the senior representative and heir general of James Hamilton, 1st Earl of Clanbrassil.
He succeeded her in 1808 as the Baron Dufferin and Claneboye.
Sir James was married on 15 November, 1801, to Anne Dorothea, only daughter of 1st Baron Oriel.
He died in 1836, and was succeeded by his brother Hans.
Lady Blackwood died in 1865, aged 93. They had no children.
Frederick Temple Hamilton-Temple-Blackwood, 5th Baron Dufferin and Claneboye and 6th Baronet (1826–1902) was created Earl of Dufferin in 1871 and further advanced to a marquessate, as Marquess of Dufferin and Ava, in 1888.
John Francis Blackwood, 11th Baron Dufferin and Claneboye (b 1944), is the 12th Blackwood Baronet of Ballyleidy, and the 8th Blackwood Baronet of the Navy.
The Blackwood Baronets' town residence was at 13 Cavendish Square, London.
First published in June, 2012.