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.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Maria Laskarina
Maria Laskarina (c. 1206 – 16 July or 24 June 1270) was a Queen consort of Hungary by marriage to Béla IV of Hungary.
She was the daughter of Theodore I Laskaris and Anna Angelina.
Margaret of Hungary (saint)
Margaret of Hungary (January 27, 1242 – January 18, 1270) was a Dominican nun and the daughter of King Béla IV of Hungary and Maria Laskarina.
She was the younger sister of Kinga of Poland (Kunegunda) and Yolanda of Poland and, through her father, the niece of the famed Elizabeth of Hungary.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Margaret of Bohemia, Queen of Hungary
Margaret of Bohemia( 24 May 1335 – 1349, before October), also known as Margaret of Luxembourg, was a Queen consort of Hungary by her marriage to Louis I of Hungary.
She was the second child of Charles IV, Holy Roman Emperor by his first wife Blanche of Valois.
She was a member of the House of Luxembourg.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Margaret of France, Queen of England and Hungary
Margaret of France( 1158 – 18 September 1197) was queen of England by marriage to Henry the Young King, and queen of Hungary and Croatia by marriage to Béla III of Hungary.
Yolanda of Poland
Yolanda of Poland( also known as Helen; 1235 – 11 June 1298) was the daughter of King Béla IV of Hungary and Maria Laskarina.
She was the sister of Margaret of Hungary and Kinga of Poland( Cunegunda).
One of her paternal aunts was the Franciscan Elizabeth of Hungary.
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.

Question: Who is the maternal grandfather of Margaret Of Hungary (Saint)?
Answer: Theodore I Laskaris