Sir William Lowther, 2nd Baronet
Sir William Lowther, 2nd Baronet( c. 1694 – 6 March 1763) was an English landowner from Swillington, and a baronet in the Baronetage of Great Britain.
He was the eldest son of Sir William Lowther, 1st Baronet by his wife, Annabella Maynard.
He was educated at schools in Wakefield and Leeds before being admitted to Sidney Sussex College, Cambridge, as a fellow- commoner on 28 February 1713.
He succeeded his father as baronet and as Member of Parliament for Pontefract in 1729.
He was forced to sell his Pontefract burgages, from which he derived most of his influence in the constituency, in straightened financial circumstances in 1740, and left the Commons when it was dissolved the following year.
He was twice married.
His first wife, Diana Condon, whom he married in 1719, was the daughter of Thomas Condon.
She died on 1 January 1736, and he married his second wife, Catherine Ramsden( died 5 January 1778), the daughter of Sir William Ramsden, 2nd Baronet, later the same year on 17 August 1736.
He had no children by either wife.
He left the Swillington estate to his first cousin, Rev. William Lowther, who was later made a baronet and whose son was created Earl of Lonsdale in 1807.
Sir Bysshe Shelley, 1st Baronet
Sir Bysshe Shelley, 1st Baronet of Castle Goring( 21 June 1731 – 6 January 1815) was the grandfather of English Romantic poet Percy Bysshe Shelley.
William Lowther, 1st Earl of Lonsdale
William Lowther, 1st Earl of Lonsdale KG( 29 December 175719 March 1844) was a British Tory politician and nobleman.
Sir William Lowther, 1st Baronet, of Little Preston
Sir William Lowther, 1st Baronet( 10 July 1707 – 15 June 1788) was an English landowner and curate, of Little Preston, Yorkshire.
The eldest son of Christopher Lowther( d. 1718) and grandson of Sir William Lowther, he went to school in Kirkleatham before entering Trinity College, Cambridge in 1726.
Ordained priest in 1734, he became rector of Swillington from 1757 to 1788.
On 31 August 1753, he married Anne Zouch( d. 1759), sister of Thomas Zouch.
They had two sons, each of whom married a daughter of John Fane, 9th Earl of Westmorland: In 1754, he bought Alverthorpe Hall from his cousin, Thomas Maude.
He inherited the estate of Swillington in 1763, upon the death of his first cousin Sir William Lowther, 2nd Baronet.
The following year, on 22 August 1764, he was himself created a baronet.
James Lowther, 1st Viscount Ullswater
James William Lowther, 1st Viscount Ullswater,( 1 April 1855 – 27 March 1949), was a British Conservative politician.
He served as Speaker of the House of Commons between 1905 and 1921.
Sir William Lowther, 1st Baronet, of Marske
Sir William Lowther, 1st Baronet (4 January 1676 – 6 April 1705) was an English landowner from Marske-by-the-Sea, Yorkshire.
He was the eldest son of Anthony Lowther and Margaret Penn, daughter of Sir William Penn.
On 15 June 1697, he was created a baronet.
He married Catherine Preston and had three children:
John Lowther (died 1729)
John Lowther(" c." 1684 – 1 July 1729) was an English landowner from Ackworth Park.
He was the son of Ralph Lowther and Mary Lawson, and the grandson of Sir John Lowther, 1st Baronet.
He was Member of Parliament for the borough of Pontefract from 1722 to 1729, alongside his second cousin Sir William Lowther, 1st Baronet, and died about four months after.
Sir Gerard Lowther, 1st Baronet
Sir Gerard Augustus Lowther, 1st Baronet( 16 February 1858 – 5 April 1916) was a British diplomat.
Anthony Lowther (died 1693)
Anthony Lowther, FRS (c. 1641 – 27 January 1693) was an English landowner, of Marske-by-the-Sea, Yorkshire and Member of Parliament.
He was the eldest son of draper Robert Lowther (died 1655), an alderman of London and his second wife Elizabeth.
Robert's brother was Sir John Lowther of Lowther.
In 1649, he and his nephew, Sir John Lowther, 1st Baronet, of Lowther, MP for Westmorland, bought Marske-by-the-Sea for £13,000 and developed the alum deposits there.
He was one of the original Fellows of the Royal Society, from its chartered inception in 1663.
He was elected Member of Parliament for Appleby in March and October, 1679.
He died in 1693 and was buried at Walthamstow.
In February 1667, he had married Margaret Penn, daughter of Sir William Penn, and had one son, Sir William Lowther, 1st Baronet (1670–1705), who was created a baronet in 1697 and became MP for Lancaster in 1702.
Sir John Lowther, 1st Baronet, of Swillington
Sir John Lowther, 1st Baronet( 1 April 1759 – 19 March 1844) of Swillington, Yorkshire was an English landowner and Member of Parliament.
He was the second son of Sir William Lowther, 1st Baronet and educated at Westminster School and Trinity College Cambridge.
On 4 September 1790, he married Lady Elizabeth Fane( d. 1844), daughter of John Fane, 9th Earl of Westmorland.
They had four children:
He purchased the estate at Wilton Castle in about 1806 and built a new mansion house there.
At some time after his elder brother was created Earl of Lonsdale, the Swillington estate was made over to John, who was himself created a baronet on 3 November 1824.
He died in 1844 and was succeeded by his eldest son John Henry Lowther.

Question: Who is Sir William Lowther, 1St Baronet, Of Marske's paternal grandfather?
Answer: Robert Lowther