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.
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
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Maria Anna of Spain
Infanta Maria Anna of Spain (18 August 1606 – 13 May 1646) was a Holy Roman Empress and Queen of Hungary and Bohemia by marriage to Ferdinand III, Holy Roman Emperor.
She acted as regent on several occasions during the absences of her spouse.
Daughter of King Philip III of Spain and Margaret of Austria, prior to her Imperial marriage she was considered a possible wife for Charles, Prince of Wales; the event, later known in history as the "Spanish Match", provoked a domestic and political crisis in the Kingdoms of England and Scotland.
In the imperial court in Vienna she continued to be strongly influenced by her native Spanish culture (from clothes to music) and also to promote the strengthening of relations between the Imperial and Spanish branches of the House of Habsburg.
Leopold Innocenty Nepomucen Polzer
Leopold Innocenty Nepomucen Polzer( 15 October 1697 – 5 January 1753) was a Polish lawyer.
Polzer was born and died in Cieszyn.
He was mayor of Cieszyn from 1735 until 1750, founder of Latinae Sodalitatis Teschini, and the grandfather of Leopold Szersznik.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Fred Le Deux
Frederick" Fred" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL).
He is the grandfather of Tom Hawkins.
Zhao Shoushan
Zhao Shoushan( 12 November 1894 – 20 June 1965) was a KMT general and later Chinese Communist Party politician.
He is the grandfather of Zhao Leji.
Leopold I, Holy Roman Emperor
Leopold I (full name: "Leopold Ignaz Joseph Balthasar Felician"; ; 9 June 1640 – 5 May 1705) was Holy Roman Emperor, King of Hungary, Croatia, and Bohemia.
The second son of Ferdinand III, Holy Roman Emperor, by his first wife, Maria Anna of Spain, Leopold became heir apparent in 1654 by the death of his elder brother Ferdinand IV.
Elected in 1658, Leopold ruled the Holy Roman Empire until his death in 1705, becoming the longest-ruling Habsburg emperor (at 46 years and 9 months).
Leopold's reign is known for conflicts with the Ottoman Empire in the east and rivalry with Louis XIV, a contemporary and first cousin, in the west.
After more than a decade of warfare, Leopold emerged victorious from the Great Turkish War thanks to the military talents of Prince Eugene of Savoy.
By the Treaty of Karlowitz, Leopold recovered almost all of the Kingdom of Hungary, which had fallen under Turkish power in the years after the 1526 Battle of Mohács.
Leopold fought three wars against France: the Franco-Dutch War, the Nine Years' War, and the War of the Spanish Succession.
In this last, Leopold sought to give his younger son the entire Spanish inheritance, disregarding the will of the late Charles II.
Leopold started a war that soon engulfed much of Europe.
The early years of the war went fairly well for Austria, with victories at Schellenberg and Blenheim, but the war would drag on until 1714, nine years after Leopold's death, which barely had an effect on the warring nations.
When peace returned, Austria could not be said to have emerged as triumphant as it had from the war against the Turks.

Question: Who is Leopold I, Holy Roman Emperor's maternal grandfather?
Answer: Philip III of Spain