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.
Martin McLaren
Major Martin John McLaren( 11 January 1914 – 27 July 1979), British soldier and Conservative Party politician.
He was the son of Hon. Francis McLaren, Liberal MP for Spalding and Barbara Jekyll.
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.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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.
Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Henry McLaren, 2nd Baron Aberconway
Henry Duncan McLaren, 2nd Baron Aberconway, CBE (16 April 1879 – 23 May 1953) was a British politician, horticulturalist and industrialist.
He was the son of Charles McLaren, 1st Baron Aberconway and Laura Pochin.
John Francis McLaren
John Francis McLaren (19 June 1919 – 23 March 1953) was a Royal Air Force officer.
He was the younger son of Henry McLaren, 2nd Baron Aberconway and Christabel MacNaghten.

Question: Who is John Francis Mclaren's paternal grandfather?
Answer: Charles McLaren, 1st Baron Aberconway