John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Gilbert Talbot, 3rd Baron Talbot
Gilbert Talbot, 3rd Baron Talbot( c. 1332–1387) was an English nobleman and soldier.
He was the grandfather of John Talbot, 1st Earl of Shrewsbury.
Archibald Hope, Lord Rankeillor
Sir Archibald Hope, Lord Rankeillor (1639 – 10 October 1706) was a Scottish advocate and judge, the second son of John Hope, Lord Craighall, the grandfather of the botanist John Hope and the great-grandfather of the chemist Thomas Charles Hope, FRSE.
Henry Krause
Henry J." Red" Krause, Jr.( August 28, 1913 – February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.
He played college football at St. Louis University.
He is the grandfather of Jennifer Krause
He is the great grandfather of Payton Hoeing
John Roberts (Flint MP)
John Roberts (14 July 1835 – 24 February 1894), was a Welsh Liberal Party politician.
Roberts was the son of David Roberts.
His father, who was born in Llanrwst Wales, moved to Liverpool at an early age, where he built up a successful timber business, and later settled in Abergele.
Roberts was educated at Brighton.
He was a magistrate for Denbighshire and constructed the mansion of Bryngwenallt in Abergele.
In a by-election in 1878, Roberts was elected to the House of Commons as the Member of Parliament (MP) for Flint Boroughs.
He held the seat until 1892.
Roberts died two years later at the age of 58.
Roberts married Katharine Tudor Hughes, daughter of Rev. John Hughes, of Liverpool.
Their son John became a Liberal politician and was created Baron Clwyd in 1919.
John Roberts, 1st Baron Clwyd
John Herbert Roberts, 1st Baron Clwyd (8 August 1863 – 19 December 1955), known as Sir Herbert Roberts, 1st Baronet, from 1903 to 1919, was a Welsh Liberal politician.
Roberts was the son of John Roberts, of Abergele, Denbighshire.
He was elected to the House of Commons for Denbighshire West in 1892, a seat he held until 1918.
Between 1912 and 1918 he was Chairman of the Welsh Liberal Parliamentary Party.
Roberts was created a Baronet, of Brynwenalt of Kilmaron, in 1903 and in 1919 he was raised to the peerage as Baron Clwyd, of Abergele in the County of Denbigh.
Lord Clwyd married Hannah, daughter of William Sproston Caine and granddaughter of Hugh Stowell Brown, in 1893.
She died in 1951.
Clwyd died in December 1955, aged 92, and was succeeded in his titles by his son Trevor Roberts.
Sir Samuel Roberts, 1st Baronet
Sir Samuel Roberts, 1st Baronet PC, DL( 30 April 1852 – 19 June 1926) was a British politician and businessman.
Richard Warburton Lytton
Richard John Warburton Lytton(" né" Warburton; 26 August 1745 – 29 December 1810) was an English landowner and member of the Lytton family.
He was the father of Elizabeth Barbara Lytton, and the grandfather of Henry Bulwer, 1st Baron Dalling and Bulwer and Edward Bulwer- Lytton, 1st Baron Lytton.
Richard Wesley, 1st Baron Mornington
Richard Colley Wesley, 1st Baron Mornington (– 31 January 1758) was an Irish peer, best remembered as the grandfather of Arthur Wellesley, 1st Duke of Wellington.
John Christian Kunkel
John Christian Kunkel (September 18, 1816 – October 14, 1870) was a Whig and Republican member of the U.S. House of Representatives from Pennsylvania.
He was the grandfather of John Crain Kunkel.

Question: Who is the paternal grandfather of John Roberts, 1St Baron Clwyd?
Answer: David Roberts