Charles I, Duke of Bourbon
Charles de Bourbon (1401 – 4 December 1456, Château de Moulins) was the oldest son of John I, Duke of Bourbon and Marie, Duchess of Auvergne.
He was Count of Clermont-en-Beauvaisis from 1424, and Duke of Bourbon and Auvergne from 1434 to his death, although due to the imprisonment of his father after the Battle of Agincourt, he acquired control of the duchy more than eighteen years before his father's death.
In 1425, Charles renewed his earlier betrothal by marrying Agnes of Burgundy (1407–1476), daughter of John the Fearless.
Charles entered a relationship with Jeanne de Bournan, together they had Louis de Bourbon, Count of Roussillon.
Louis founded the House of Bourbon-Roussillon (Rossello).
Louis is known for his many services to the State.
As a reward for his loyalty and dedication to Louis XI during the League of the Public Weal conflict, Louis XI gave him in marriage his legitimized daughter Jeanne de Valois.
Charles served with distinction in the Royal army during the Hundred Years' War, while nevertheless maintaining a truce with his brother-in-law and otherwise enemy, Philip III, Duke of Burgundy.
Both dukes were reconciled and signed an alliance by 1440.
He was present at the coronation of Charles VII where he fulfilled the function of a peer and conferred knighthood.
Despite this service, he took part in the "Praguerie" (a revolt by the French nobles against Charles VII) in 1439–1440.
When the revolt collapsed, he was forced to beg for mercy from the King, and was stripped of some of his lands.
He died on his estates in 1456.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Kaya Alp
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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.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Marie, Duchess of Auvergne
Marie of Berry (c. 1375 – June 1434) was "suo jure" Duchess of Auvergne and Countess of Montpensier in 1416-1434.
She was the daughter of John, Duke of Berry, and Joanna of Armagnac.
She was married three times.
She acted as administrator of the Duchy of Bourbon for her third spouse
John I, Duke of Bourbon, during his imprisonment in England after he was captured following the French defeat at the Battle of Agincourt in 1415, until 1434.
John Mackay (poet)
John Mackay( 1656–1754), known as( The Blind Piper), was a Scottish Gaelic poet and composer, and the grandfather of William Ross.
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

Question: Who is Charles I, Duke Of Bourbon's maternal grandfather?
Answer: John, Duke of Berry