William Herbert, 2nd Marquess of Powis
William Herbert, 2nd Marquess of Powis( c. 1660–1745) was a Welsh aristocrat and Jacobite supporter.
John Butler, 2nd Marquess of Ormonde
John Butler, 2nd Marquess of Ormonde, KP( 24 August 1808 – 25 September 1854) was an Irish politician and peer.
Lewis Gordon, 3rd Marquess of Huntly
Lewis Gordon, 3rd Marquess of Huntly( c. 1626–1653) was a Scottish nobleman.
He was the third son of George Gordon, 2nd Marquess of Huntly.
Hercules Taylour
Major Hercules Langford Taylour( 9 September 1759 – 20 May 1790) styled
The Honourable from 1760, was an Irish soldier and politician.
He was the second son of Thomas Taylour, 1st Earl of Bective and his wife Jane Rowley, daughter of Hercules Langford Rowley and Elizabeth Rowley, 1st Viscountess Langford.
His older brother was Thomas Taylour, 1st Marquess of Headfort and his younger brothers were Robert Taylour and Clotworthy Rowley, 1st Baron Langford.
Taylour served in British Army and was major of the 5th Dragoon Guards( Princess Charlotte of Wales's).
In 1781, he entered the Irish House of Commons for Kells, the same constituency his father represented also, and was Member of Parliament( MP) until his death in 1790.
He never married nor sired any children.
Thomas Taylour, 2nd Marquess of Headfort
Thomas Taylour, 2nd Marquess of Headfort KP PC (4 May 1787 – 6 December 1870), styled Viscount Headfort from 1795 to 1800 and Earl of Bective from 1800 to 1829, was an Anglo-Irish Whig politician.
He was the Member of Parliament (MP) for Meath from 1812 to 1830.
Headfort was the son of Thomas Taylour, 1st Marquess of Headfort, and his wife Mary (née Quin), and succeeded his father in the marquessate in 1829.
In 1831 he was created Baron Kenlis, of Kenlis in the County of Meath, in the Peerage of the United Kingdom, which entitled him to an automatic seat in the House of Lords (his other titles being in the Peerage of Ireland).
He was sworn of the Irish Privy Council in 1835 and served in the Whig administration of Lord Melbourne as a Lord-in-waiting (government whip in the House of Lords) from 1837 to 1841.
Between 1831 and 1870 Headfort also held the post of Lord Lieutenant of Cavan.
He was made a Knight of the Order of St Patrick in 1839.
Lord Headfort
first married Olivia, daughter of John Andrew Stevenson, in 1822.
At the time of her early death (at the hands of cholera) on 21 July 1834, she left her husband with nine children to mourn her passing.
On 06 May 1853, he married Lady Frances Macnaghten, daughter of John Livingstone Martyn and widow of (i) Lieutenant-Colonel James McClintock of the Bombay Army and (ii)
Sir William Hay Macnaghten, British Envoy to Afghanistan who was murdered in Kabul in 1841.
Headfort died in December 1870, aged 83, and was succeeded in the marquessate by his son from his first marriage, Thomas.
The second Marchioness of Headfort died in 1878.
Geoffrey Taylour, 4th Marquess of Headfort
Geoffrey Thomas Taylour, 4th Marquess of Headfort DL, JP, FZS( 12 June 1878 – 29 January 1943), styled Lord Geoffrey Taylour until 1893 and Earl of Bective between 1893 and 1894, was a British politician and Army officer.
Thomas Taylour, 3rd Marquess of Headfort
Thomas Taylour, 3rd Marquess of Headfort KP PC( I)( 1 November 1822 – 22 July 1894) was an Irish peer, styled Lord Kenlis until 1829 and Earl of Bective from 1829 to 1870.
He was High Sheriff of Meath in 1844, of Cavan in 1846, and of Westmorland in 1853.
From 1852 to 1853, he was State Steward to the Lord Lieutenant of Ireland.
In 1854, Bective succeeded his father- in- law as Member of Parliament for Westmorland, sitting as a Conservative.
He succeeded his father as Marquess of Headfort in 1870.
He also inherited his father's title of Baron Kenlis, in the Peerage of the United Kingdom, and so gained a seat in the House of Lords; his son Thomas replaced him in the House of Commons for Westmorland.
He was an Irish Freemason, having been initiated in Lodge No 244( Kells, Ireland), and served as the Provincial Grand Master of Meath from 1888 until his death and burial at Virginia, County Cavan in 1894.
He was also an English Freemason and belonged to a number of Masonic Orders.
In particular, he served as Grand Sovereign( the Head of the Order) of the Masonic and Military Order of the Red Cross of Constantine from 1866 until 1874.
Patsy Cornwallis-West
Mary Adelaide Virginia Thomasina Eupatoria" Patsy" Cornwallis- West( née FitzPatrick; 1856- 21 July 1920) was an Irish born aristocrat and later a prominent mistress of the future King Edward VII.
Cornwallis- West was born into an upper -class Irish family as the daughter of the Rev. Frederick, a descendant of Barnaby Fitzpatrick, 1st Baron Upper Ossory and Lady Olivia FitzPatrick, daughter of Thomas Taylour, 2nd Marquess of Headfort.
Her mother unsuccessfully attempted to seduce Albert, Prince Consort, and Cornwallis- West herself became mistress of the Prince of Wales( later King Edward VII) at the age of 16.
The affair was discovered and she was married to the twice older William Cornwallis- West in 1872.
Three children were born to Mary and William Cornwallis- West: a daughter named Daisy in 1873, a son named George the following year and finally Constance in 1876.
Cornwallis- West became notorious for using her influence over the Prince of Wales to arrange marriages for her children, particularly the marriage of her younger daughter to the wealthy Duke of Westminster.
In 1915, she began a relationship with a much younger shell- shocked soldier, Patrick Barrett, nursed in the Duchess of Westminster's hospital in Le Touquet.
Her attempts to have the soldier promoted within the army caused a scandal.
She was widowed in 1917 and died three years later.
Thomas Taylour, 1st Marquess of Headfort
Thomas Taylour, 1st Marquess of Headfort (18 November 1757 – 24 October 1829), styled Viscount Headford from 1766 to 1795, and known as The Earl of Bective from 1795 to 1800, was an Irish peer and politician.
Margaret Audley, Duchess of Norfolk
Margaret Howard (née Audley), Duchess of Norfolk (1540 – 9 January 1564) was the sole surviving child of Thomas Audley, 1st Baron Audley of Walden and Lady Elizabeth Grey, daughter of Thomas Grey, 2nd Marquess of Dorset and Margaret Wotton.

Question: What is the date of birth of Thomas Taylour, 2Nd Marquess Of Headfort's father?
Answer: 18 November 1757