Henry Percy, 1st Earl of Northumberland
Henry Percy, 1st Earl of Northumberland, 4th Baron Percy, titular King of Mann, KG, Lord Marshal( 10 November 134120 February 1408) was the son of Henry de Percy, 3rd Baron Percy, and a descendant of Henry III of England.
His mother was Mary of Lancaster, daughter of Henry, 3rd Earl of Lancaster, son of Edmund, Earl of Leicester and Lancaster, who was the son of Henry III.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Prithvipati Shah
Prithvipati Shah( ?–1716) was the king of the Gorkha Kingdom in the Indian subcontinent, present- day Nepal.
He was the grandfather of Nara Bhupal Shah.
Henry Bryant (naturalist)
Henry Bryant( May 12, 1820 – February 2, 1867) was an American physician and naturalist.
He was the grandfather of Henry Bryant Bigelow.
Henry III, Holy Roman Emperor
Henry III (28 October 1017 – 5 October 1056), called the Black or the Pious, was Holy Roman Emperor from 1046 until his death in 1056.
A member of the Salian Dynasty, he was the eldest son of Emperor Conrad II of Germany and Gisela of Swabia.
His father made him Duke of Bavaria in 1026 after the death of Duke Henry V at the age of 9.
At the age of 11 in 1028, on Easter Day after his father had been crowned Holy Roman Emperor, Henry was elected King of Germany in the cathedral of Aachen, and crowned by Archbishop Pilgrim of Cologne.
To secure his ultimate transition to the throne, upon the death of Duke Herman IV in 1038, Conrad II named him Duke of Swabia as well as the King of Burgundy, which Conrad II had inherited in 1033.
Upon the death of his father on in 1039, Henry became the sole ruler of the kingdom, succeeding his father as Duke of Carinthia and King of Italy.
He was crowned Emperor by Pope Clement II in Rome in 1046.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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 Wentworth
Sir Henry Wentworth of Nettlestead, Suffolk, KB( born c. 1448 – died between 17 August 1499 and 27 February 1501)," de jure" 4th Baron le Despencer, was the grandfather of Henry VIII's third wife, Jane Seymour, and the great- grandfather of Jane's son, Edward VI.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Conrad II, Holy Roman Emperor
Conrad II (4 June 1039), also known as and , was Emperor of the Holy Roman Empire from 1027 until his death in 1039.
The founder of the Salian dynasty of emperors who ruled for over a century, Conrad also served as King of Germany from 1024, King of Italy from 1026, and King of Burgundy (Arelat) from 1033.
The son of a mid-level nobleman in Franconia, Count Henry of Speyer and Adelaide of Metz, he inherited the titles of count of Speyer and of Worms as an infant when his father died.
Conrad extended his power beyond his inherited lands, receiving the favor of the princes of the Kingdom of Germany.
When the Saxon-based Ottonian dynasty of emperors died off with the childless Emperor Henry II, Conrad was elected to succeed him as King in 1024 at the age of 34.
Conrad continued the policies and achievements of the Ottonian Henry II regarding the Catholic Church and the affairs of Italy.
Conrad continued to build the Church as a center for imperial power, preferring to appoint church bishops over secular lords to important posts across the Empire.
Like Henry II before him, Conrad also continued a policy of benign neglect over Italy, especially for the city of Rome.
His reign marked a high point of the medieval imperial rule and a relatively peaceful period for the Empire.
Following the death of the childless King Rudolph III of Burgundy in 1032, Conrad claimed dominion over the Kingdom of Arles and conquered and incorporated it into the Empire.
The three kingdoms (Germany, Italy, and Burgundy) formed the basis of the Empire as the "royal triadregna tria").

Question: Who is Henry Iii, Holy Roman Emperor's paternal grandfather?
Answer: Henry of Speyer