Question: When is Robert Henley, 2Nd Earl Of Northington's father's birthday?

Knowledge 1: Robert Henley, 2nd Earl of Northington
Robert Henley, 2nd Earl of Northington (3 January 1747 – 5 July 1786) was a British politician.He was born the eldest son of Robert Henley, 1st Earl of Northington and educated at Westminster School and Christ Church, Oxford.He succeeded his father to the earldom in 1772, inheriting The Grange, Northington.He was appointed a Teller of the Exchequer in 1763, a position he held until his death.He was also Clerk of the hanaper for life from 1771.He was elected a Member of Parliament (MP) for Hampshire on 30 March 1768, and sat until succeeding as 2nd Earl of Northington on 14 January 1772, when he moved to the House of Lords.He was made a Knight of the Thistle on 18 August 1773.In 1783 he served as Lord Lieutenant of Ireland in the Fox-North Coalition, being appointed a member of the Privy Council on 30 April.On his death, unmarried, at the age of thirty-nine, his titles became extinct and his sisters sold The Grange to the Drummond banking family.A 1787 portrait by Joshua Reynolds is in the Art Gallery of South Australia. [SEP] Knowledge 2: Robert Henley, 1st Earl of Northington
Robert Henley, 1st Earl of Northington, PC (c. 1708 – 14 January 1772) was the Lord High Chancellor of Great Britain.He was a member of the Whig Party in the parliament and was known for his wit and writing.
Knowledge 1: Robert Henley, 1st Earl of Northington
Robert Henley, 1st Earl of Northington, PC (c. 1708 – 14 January 1772) was the Lord High Chancellor of Great Britain.He was a member of the Whig Party in the parliament and was known for his wit and writing. [SEP] Knowledge 2: Robert Henley, 2nd Baron Henley
Robert Henley Henley, 2nd Baron Henley (3 September 1789 – 3 February 1841), was a British lawyer and Member of Parliament.Born Robert Henley Eden, he was the son of Morton Eden, 1st Baron Henley, and Lady Elizabeth Henley, youngest daughter of Lord Chancellor Robert Henley,1st Earl of Northington (c. 1708 – 1772).He served as a Master in Chancery from 1826 to 1840 and between 1826 and 1830 he also sat as Member of Parliament for Fowey.In 1830 he succeeded his father as second Baron Henley, but as this was an Irish peerage it did not entitle him to a seat in the House of Lords.The following year, Lord Henley assumed by royal licence the surname of Henley in lieu of Eden.in commemoration of his maternal ancestors, and the same year he published a biography of his maternal grandfather, entitled "Memoir of the Life of Robert Henley, Earl of Northington, Lord High Chancellor of Great Britain".Henley married Harriet Peel, daughter of Sir Robert Peel, 1st Baronet, and sister of Prime Minister Sir Robert Peel, 2nd Baronet, in 1823.He died in February 1841, aged 51, and was succeeded in the barony by his son Anthony.Lady Henley died in 1869.
Knowledge 1: Robert Henley, 2nd Earl of Northington
Robert Henley, 2nd Earl of Northington (3 January 1747 – 5 July 1786) was a British politician.He was born the eldest son of Robert Henley, 1st Earl of Northington and educated at Westminster School and Christ Church, Oxford.He succeeded his father to the earldom in 1772, inheriting The Grange, Northington.He was appointed a Teller of the Exchequer in 1763, a position he held until his death.He was also Clerk of the hanaper for life from 1771.He was elected a Member of Parliament (MP) for Hampshire on 30 March 1768, and sat until succeeding as 2nd Earl of Northington on 14 January 1772, when he moved to the House of Lords.He was made a Knight of the Thistle on 18 August 1773.In 1783 he served as Lord Lieutenant of Ireland in the Fox-North Coalition, being appointed a member of the Privy Council on 30 April.On his death, unmarried, at the age of thirty-nine, his titles became extinct and his sisters sold The Grange to the Drummond banking family.A 1787 portrait by Joshua Reynolds is in the Art Gallery of South Australia. [SEP] Knowledge 2: Robert Henley, 2nd Baron Henley
Robert Henley Henley, 2nd Baron Henley (3 September 1789 – 3 February 1841), was a British lawyer and Member of Parliament.Born Robert Henley Eden, he was the son of Morton Eden, 1st Baron Henley, and Lady Elizabeth Henley, youngest daughter of Lord Chancellor Robert Henley,1st Earl of Northington (c. 1708 – 1772).He served as a Master in Chancery from 1826 to 1840 and between 1826 and 1830 he also sat as Member of Parliament for Fowey.In 1830 he succeeded his father as second Baron Henley, but as this was an Irish peerage it did not entitle him to a seat in the House of Lords.The following year, Lord Henley assumed by royal licence the surname of Henley in lieu of Eden.in commemoration of his maternal ancestors, and the same year he published a biography of his maternal grandfather, entitled "Memoir of the Life of Robert Henley, Earl of Northington, Lord High Chancellor of Great Britain".Henley married Harriet Peel, daughter of Sir Robert Peel, 1st Baronet, and sister of Prime Minister Sir Robert Peel, 2nd Baronet, in 1823.He died in February 1841, aged 51, and was succeeded in the barony by his son Anthony.Lady Henley died in 1869.

Answer: 1708