Question: Who is Edward Watson, Viscount Sondes's paternal grandfather?

Knowledge 1: Edward Watson, Viscount Sondes
Edward Watson, Viscount Sondes (3 July 1686 – 20 March 1722) of Lees Court, Sheldwich, Kent, and Park Place, London, was a British Whig politician who sat in the House of Commons between 1708 and 1722.Watson was the eldest son of Lewis Watson, 1st Earl of Rockingham and his wife Catherine Sondes, daughter of George Sondes, 1st Earl of Feversham.He matriculated at Merton College, Oxford on 1 June 1703, aged 16 and travelled abroad to Germany in 1707.Watson arrived back from Germany in 1708, in time to be elected as a Whig Member of Parliament for Canterbury at the 1708 British general election.He proposed a motion on 25 January 1709 for an address to the Queen that she should consider remarrying.He also supported the naturalization of the Palatines.He was appointed to a committee to draft a bill to limit the time allowed for public mourning, since this was felt to be having an adverse effect on Canterbury’s silk trade.He also voted for the impeachment of Dr Sacheverell and possibly in consequence he lost his seat at the 1710 British general election.He was returned unopposed as MP for New Romney at a by-election on 20 April 1713.Following his father's elevation as Earl of Rockingham in 1714, he was styled Viscount Sondes.In 1718, he went over to the Opposition and in 1719 he was appointed a Gentleman of the Bedchamber to the Prince of Wales.Watson died in 1722, predeceasing his father by 2 years.He married Catherine Tufton, eldest daughter of Thomas Tufton, 6th Earl of Thanet in 1709, and had three sons and a daughter:
In 1729 his widow and her four sisters became co-heiresses to the Barony of Clifford.The abeyance was terminated in 1734 for the third sister Margaret, wife of Lord Lovel, but following her death without surviving issue in 1775 the barony was restored in favour of Viscount Sondes' grandson Edward Southwell, 20th Baron Clifford. [SEP] Knowledge 2: Lewis Watson, 1st Earl of Rockingham
Lewis Watson, 1st Earl of Rockingham (29 December 1655 – 19 March 1724) was an English peer and politician.Rockingham was the eldest son of Edward Watson, 2nd Baron Rockingham and his wife, the former Lady Anne Wentworth, daughter of Thomas Wentworth, 1st Earl of Strafford.In 1677, he married Lady Catherine Sondes, a daughter of George Sondes, 1st Earl of Feversham.They had five surviving children:In 1681–1685, Watson was Whig Member of Parliament for Canterbury and for Higham Ferrers briefly in 1689, before having to leave the Commons on inheriting his father's barony that year.Lord Rockingham was Master of the Buckhounds in 1703–1705, Custos Rotulorum and Lord Lieutenant of Kent in 1705–1724, Vice-Admiral of Kent in 1705 and Deputy Warden of the Cinque Ports in 1705–1708.In 1714, he was created Earl of Rockingham and on his death in 1724, his titles passed to his grandson, Lewis.
Knowledge 1: Edward Watson, Viscount Sondes
Edward Watson, Viscount Sondes (3 July 1686 – 20 March 1722) of Lees Court, Sheldwich, Kent, and Park Place, London, was a British Whig politician who sat in the House of Commons between 1708 and 1722.Watson was the eldest son of Lewis Watson, 1st Earl of Rockingham and his wife Catherine Sondes, daughter of George Sondes, 1st Earl of Feversham.He matriculated at Merton College, Oxford on 1 June 1703, aged 16 and travelled abroad to Germany in 1707.Watson arrived back from Germany in 1708, in time to be elected as a Whig Member of Parliament for Canterbury at the 1708 British general election.He proposed a motion on 25 January 1709 for an address to the Queen that she should consider remarrying.He also supported the naturalization of the Palatines.He was appointed to a committee to draft a bill to limit the time allowed for public mourning, since this was felt to be having an adverse effect on Canterbury’s silk trade.He also voted for the impeachment of Dr Sacheverell and possibly in consequence he lost his seat at the 1710 British general election.He was returned unopposed as MP for New Romney at a by-election on 20 April 1713.Following his father's elevation as Earl of Rockingham in 1714, he was styled Viscount Sondes.In 1718, he went over to the Opposition and in 1719 he was appointed a Gentleman of the Bedchamber to the Prince of Wales.Watson died in 1722, predeceasing his father by 2 years.He married Catherine Tufton, eldest daughter of Thomas Tufton, 6th Earl of Thanet in 1709, and had three sons and a daughter:
In 1729 his widow and her four sisters became co-heiresses to the Barony of Clifford.The abeyance was terminated in 1734 for the third sister Margaret, wife of Lord Lovel, but following her death without surviving issue in 1775 the barony was restored in favour of Viscount Sondes' grandson Edward Southwell, 20th Baron Clifford. [SEP] Knowledge 2: Edward Southwell Jr.
Edward Southwell Jr.( 1/16 June 1705 – 16 March 1755) of King's Weston, Gloucestershire, was an Anglo- Irish Whig politician who sat in the Parliament of Ireland from 1727 to 1755 and in the British House of Commons from 1739 to 1754.Southwell was the son of Edward Southwell( 1671 – 1730) and Elizabeth Cromwell, 8th Baroness Cromwell and the grandson of Sir Robert Southwell.He was educated at Westminster School from 1715 to 1716 and matriculated at Queen's College, Oxford in 1721.He travelled abroad from 1723.Southwell sat in the Irish House of Commons for Downpatrick from 1727 until his death.He succeeded his father as Principal Secretary of State( Ireland) in 1730, and on 6 May 1732 he was appointed to the Privy Council of Ireland.Southwell married on 21 August 1729 Catherine Watson( died April 1765), daughter of Edward Watson, Viscount Sondes and Lady Catherine Tufton and lived in Kings Weston House near Bristol.Their son Edward Southwell later became Baron de Clifford.Southwell sat in the House of Commons of Great Britain from 1739 to 1754 as MP for Bristol.
Knowledge 1: Thomas Watson, 3rd Earl of Rockingham
Thomas Watson, 3rd Earl of Rockingham( 30 December 1715 – 26 February 1746), styled Hon. Thomas Watson until 1745, was an English nobleman and politician.He represented Canterbury in the House of Commons and was appointed Lord Lieutenant of Kent after succeeding to the earldom, but died shortly thereafter.The second son of Edward Watson, Viscount Sondes, Watson entered Eton College in 1725 and Lincoln's Inn in 1732.In the 1741 British general election, he stood for Canterbury as an opposition Whig. Watson and the Tory Thomas Best ousted the incumbent Sir Thomas Hales, a Whig supporter of Walpole's administration.He continued in opposition to successive governments during his tenure in the House of Commons, which terminated in 1745 when he became Earl of Rockingham on the death of his elder brother Lewis.Despite his politics, he was appointed Lord Lieutenant of Kent in succession to his brother, but did not long survive the appointment, dying on 26 February 1746.Rockingham never married, and upon his death, the titles of Earl of Rockingham, Viscount Sondes, and Baron Throwley became extinct.He was succeeded as Baron Rockingham by Thomas Watson- Wentworth, 1st Earl of Malton, his first cousin once removed.Rockingham left his estate to his first cousin Lewis Monson, who thereafter adopted the surname of Watson. [SEP] Knowledge 2: Lewis Watson, 2nd Earl of Rockingham
Lewis Watson, 2nd Earl of Rockingham( c. 1714 – 4 November 1745) was a British peer, styled Viscount Sondes from 1722 to 1724.He was born the eldest son of Edward Watson, Viscount Sondes and Lady Catherine Tufton, the daughter of Thomas Tufton, 6th Earl of Thanet and Lady Catherine Cavendish.His father having predeceased his own father, Lewis inherited the earldom from his grandfather, Lewis Watson, 1st Earl of Rockingham, in 1724.He was Lord Lieutenant of Kent from 1737 to his death in 1745.He was married to his first cousin Catherine, daughter of Sir Robert Furnese.After he died in 1745, she remarried to Francis, Earl of Guildford.Lewis Watson died childless and was succeeded by his brother, Thomas.

Answer: Edward Watson