Magdalene of Bavaria
Magdalene of Bavaria (4 July 1587 – 25 September 1628) was a princess member of the House of Wittelsbach by birth and Countess Palatine of Neuburg and Duchess of Jülich-Berg by marriage.
She was born in Munich, Bavaria, the tenth and youngest child of William V, Duke of Bavaria and Renata of Lorraine.
Countess Palatine Hedwig Elisabeth of Neuburg
Hedwig Elisabeth of Neuburg (Hedwig Elisabeth Amelia; 18 July 1673 – 10 August 1722) was a Polish princess by marriage to James Louis Sobieski.
She was the daughter of Philip William, Duke of Neuburg, Berg and Jülich, Elector Palatine of Neuburg, and Landgravine Elisabeth Amalie of Hesse-Darmstadt.
She was the grandmother of Charles Edward Stuart, the "Young Pretender".
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Philip William, Elector Palatine
Philip William of Neuburg, Elector Palatine  (24 November 1615 – 2 September 1690) was Count Palatine of Neuburg from 1653 to 1690, Duke of Jülich and Berg from 1653 to 1679 and Elector of the Palatinate from 1685 to 1690.
He was the son of Wolfgang Wilhelm, Count Palatine of Neuburg and Magdalene of Bavaria.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Charles II, Elector Palatine
Charles II( 10 April 1651, in Heidelberg – 26 May 1685, in Heidelberg) was Elector Palatine from 1680 to 1685.
He was the son of Charles I Louis, Elector Palatine and Charlotte of Hesse- Kassel.
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.
Phil Dudley
Philip William Dudley( born 17 February 1959) is a former English footballer who played as a right- back.
Charlotte Christine Buissine
Charlotte Christine Buissine( 1749 -?), was the royal mistress of William I, Elector of Hesse from 1775 until 1778.
She was the daughter of Henri Buissine and Charlotte Varlut.
She was replaced by Rosa Dorothea Ritter.
Issue: With William
I, Elector of Hesse, she had the children:
Aleksander Kazimierz Sapieha
Aleksander Kazimierz Sapieha( 13 May 1624 – 22 May 1671) was a Polish nobleman.
He became bishop of Samogitia in 1660 and of Vilnius in 1667.
After the abdication of Jan Kazimierz, he initially supported the candidacy of Philip William, Elector Palatine, the son-in- law of Sigismund III Vasa, but later supported the successful election of Michał Korybut Wiśniowiecki.

Question: Who is the maternal grandfather of Philip William, Elector Palatine?
Answer: William V, Duke of Bavaria