Beatrice of Silesia
Beatrice of Silesia( also known as Beatrice of Świdnica;,; 1290 – 25 August 1320) was a Polish princess member of the House of Piast in the Silesian branch of Jawor- Świdnica and by marriage Duchess of Bavaria and German Queen.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Beatrice of Naples
Beatrice of Naples( 16 November 1457 – 23 September 1508), also known as Beatrice of Aragon, was twice Queen of Hungary and of Bohemia by marriage to Matthias Corvinus and Vladislaus II.
She was the daughter of Ferdinand I of Naples and Isabella of Clermont.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Margaret of Brabant
Margaret of Brabant (4 October 1276 – 14 December 1311), was the daughter of John I, Duke of Brabant and Margaret of Flanders.
She was the wife of Count Henry of Luxemburg and after his election as King of Germany in 1308, she became Queen of Germany.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
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.
Beatrice of Luxembourg
Beatrice of Luxembourg (1305 – 11 November 1319), was by birth member of the House of Luxembourg and by marriage Queen of Hungary.
She was the youngest child of Henry VII, Holy Roman Emperor and his wife, Margaret of Brabant.
Her two siblings were John of Luxembourg and Marie of Luxembourg, Queen of France.
Marie of Luxembourg, Queen of France
Marie of Luxembourg( 1304 – 26 March 1324), was by birth member of the House of Luxembourg and by marriage Queen of France and Navarre.
She was the daughter of Henry VII, Holy Roman Emperor and Margaret of Brabant.
Her two siblings were John of Luxembourg and Beatrice of Luxembourg, Queen of Hungary.
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.

Question: Who is Beatrice Of Luxembourg's maternal grandfather?