Lionel Sackville-West, 3rd Baron Sackville
Lionel Edward Sackville-West, 3rd Baron Sackville (15 May 1867 – 28 January 1928), was a British peer.
Sackville-West was the son of the Honourable William Edward Sackville-West, sixth son of George Sackville-West, 5th Earl De La Warr and Lady Elizabeth Sackville.
His mother was Georgina, daughter of George Dodwell.
He inherited the barony in 1908 on the death of his uncle, the diplomat Lionel Sackville-West, 2nd Baron Sackville.
In April 1912, Lord Sackville was appointed a deputy lieutenant of Kent.
He married his first cousin Victoria Sackville-West (1862–1936) in 1892, illegitimate daughter of the second Baron, in 1890.
Their daughter was the novelist and poet Vita Sackville-West.
Charles Sackville-West, 4th Baron Sackville
Major- General Charles John Sackville- West, 4th Baron Sackville,( 10 August 1870 – 8 May 1962) was a British Army general and peer who served throughout the First World War and reached the rank of major general.
In 1919, he was British Military Representative on the Supreme War Council and from 1920 to 1924 he was military attaché in Paris.
He inherited his title on 28 January 1928 on the death of his brother, Lionel Edward Sackville- West, 3rd Baron Sackville.
He served as Lieutenant Governor of Guernsey.
George West, Viscount Cantelupe
George John Frederick West, Viscount Cantelupe( 26 April 1814 – 25 June 1850), was a British politician.
Styled Viscount Cantelupe from birth, he was the eldest son of George Sackville- West, 5th Earl De La Warr, by Lady Elizabeth Sackville, daughter of John Sackville, 3rd Duke of Dorset.
He was the elder brother of Major- General Charles Sackville- West, 6th Earl De La Warr, Mortimer Sackville- West, 1st Baron Sackville, Lionel Sackville- West, 2nd Baron Sackville and Elizabeth Russell, Duchess of Bedford.
He was educated at Christ Church, Oxford.
Lord Cantelupe served in the Grenadier Guards, reaching the rank of lieutenant.
In 1837 he was returned to Parliament for Helston, a seat he held until 1840, and then represented Lewes until 1841.
He died unmarried in June 1850, aged 36, predeceasing his father.
His younger brother Charles eventually succeeded in the earldom.
Victoria Sackville-West, Baroness Sackville
Victoria Josefa Dolores Catalina Sackville-West, Baroness Sackville (23 September 1862 – 30 January 1936) married her first cousin Lionel Edward Sackville-West, 3rd Baron Sackville.
Their daughter was the writer, poet and gardener Vita Sackville-West.
The family lived mainly at Knole House, an estate that had been in the Sackville family for centuries.
Victoria, having experienced a controversial life herself, has since been mostly displaced in the public's consciousness by the colourful life of her daughter Vita.
Lord John Sackville
Lord John Philip Sackville (22 June 1713 – 3 December 1765) was the second son of Lionel Sackville, 1st Duke of Dorset.
He was a keen cricketer who was closely connected with the sport in Kent.
He was Member of Parliament (MP) for Tamworth from 1734 to 1747.
Lionel Sackville-West, 2nd Baron Sackville
Lionel Sackville- West, 2nd Baron Sackville, GCMG( 19 July 1827 – 3 September 1908), was a British diplomat.
Mortimer Sackville-West, 1st Baron Sackville
Mortimer Sackville- West, 1st Baron Sackville( 22 September 1820 – 1 October 1888), was a British peer and court official.
Sackville- West was the fourth son of George Sackville- West, 5th Earl De La Warr, and Elizabeth Sackville, 1st Baroness Buckhurst, younger daughter and co-heir of John Sackville, 3rd Duke of Dorset.
On the death of his kinsman Charles Sackville- Germain, 5th Duke of Dorset, in 1843, the dukedom and its subsidiary titles became extinct.
Large parts of the Sackville estates passed to the West family through Elizabeth.
The Sackville- Wests inherited parts of the estates by arrangement, notably the estate of Knole Park in Kent.
During his career Sackville- West held several high appointments within the Royal household.
In 1876 he was raised to the peerage as Baron Sackville, of Knole in the County of Kent.
The peerage was created with special remainder, failing heirs male of his body, to his younger brothers Lionel and William Edward.
He died in 1888, aged 68, and was succeeded in the barony according to the special remainder by his younger brother Lionel.
Lionel Sackville-West, 6th Baron Sackville
Lionel Bertrand Sackville- West, 6th Baron Sackville( 30 May 1913 – 27 March 2004) was a stockbroker and member of the British peerage.
In 1965, he became the sixth Baron Sackville.
Charles Sackville-West, 6th Earl De La Warr
Major- General Charles Richard Sackville- West, 6th Earl De La Warr( 13 November 1815 – 23 April 1873), styled Lord West between 1850 and 1869, was a British soldier.
Sackville- West was the second son of George Sackville- West, 5th Earl De La Warr, and Lady Elizabeth Sackville, daughter of John Sackville, 3rd Duke of Dorset.
He was the brother of George West, Viscount Cantelupe, Reginald Sackville, 7th Earl De La Warr, Elizabeth Russell, Duchess of Bedford, Mortimer Sackville- West, 1st Baron Sackville, and Lionel Sackville- West, 2nd Baron Sackville.
He was educated at Harrow.
Sackville- West served in the British Army and was appointed aide- de- camp and military secretary to Sir Hugh Gough in India in 1845.
He fought at the Battle of Sobraon in 1846 during the First Anglo- Sikh War.
In 1850 he became known by the courtesy title Lord West after the death of his elder brother, Lord Cantelupe.
Promoted to major in 1852 and to lieutenant- colonel in 1855, he served in the Crimean War.
He was appointed a Companion of the Order of the Bath in 1855 and an Officer of the Legion of Honour in 1856 and awarded the Order of the Medjidie in 1858.
In 1864 he was promoted to major- general.
He succeeded his father in the earldom in 1869.
In 1871 he was made a Knight Commander of the Order of the Bath( KCB).
Lord De La Warr died in April 1873, aged 57, by drowning himself in the River Cam.
He was unmarried and was succeeded in the earldom by his younger brother, Reginald, Lord Buckhurst.
Robert Sackville-West, 7th Baron Sackville
Robert Bertrand Sackville- West, 7th Baron Sackville DL( born 10 July 1958) is a British publisher, author and guardian of Knole in Kent, which has been a Sackville house since 1603 and is now owned by the National Trust.
The eldest son of Hugh Rosslyn Inigo Sackville- West and Bridget Eleanor Cunliffe, he inherited the title of Baron Sackville on 27 March 2004 on the death of his uncle, Lionel Bertrand Sackville- West, 6th Baron Sackville.

Question: What is the date of birth of Lionel Sackville-West, 3Rd Baron Sackville's wife?