Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
Thomas Baksa
Thomas( III) from the kindred Baksa( died 1287) was a Hungarian lord in the second half of the 13th century.
He was a supporter of Stephen V of Hungary.
Euphrosyne of Greater Poland
Euphrosyne of Greater Poland( 1247/50 – 17/19 February 1298) was a Greater Poland princess, member of the House of Piast and abbess of St. Clara in Trzebnica.
She was the second daughter of Przemys ł I, Duke of Greater Poland and Poznań, by his wife Elisabeth, daughter of Henry II the Pious, Duke of Wrocław.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Salome of Greater Poland
Salome of Greater Poland also known as Salomea Odonicówna( literally daughter of Odonic)( b. – d. April 1267?), was a Polish princess member of the Piast dynasty from the Greater Poland branch and by marriage Duchess of Glogów.
She was the third child but eldest daughter of Duke Władysław Odonic of Greater Poland by his wife Jadwiga.
Mieszko III the Old
Mieszko III the Old( c. 1126/27 – 13 March 1202), of the royal Piast dynasty, was Duke of Greater Poland from 1138 and High Duke of Poland, with interruptions, from 1173 until his death.
He was the fourth and second surviving son of Duke Bolesław III Wrymouth of Poland, by his second wife Salomea, daughter of the German count Henry of Berg- Schelklingen.
Stephen of Greater Poland
Stephen of Greater Poland( 1150 – 18 October 1166/ 77?), was a Polish prince member of the House of Piast.
He was the second son of Mieszko III the Old, Duke of Greater Poland and since 1173 High Duke of Poland, by his first wife Elisabeth, daughter of King Béla II of Hungary.
His name was probably given by his mother.
Constance of Greater Poland
Constance of Greater Poland( also known as of Poznań)( 1245/46 – 8 October 1281) was a princess of Greater Poland, a member of the House of Piast, and by marriage a Margravine of Brandenburg – Stendal.
She was the eldest daughter of Przemys ł I, Duke of Greater Poland and Poznań, by his wife Elisabeth, daughter of Henry II the Pious, Duke of Wrocław.
She was probably named after her maternal aunt Constance, second wife of Casimir I, Duke of Kuyavia.
Odon of Poznań
Odon of Poznań, also known as Odon of Greater Poland and Mieszkowic,( – 20 April 1194) was a Duke of Greater Poland and Poznań during 1177 – 1182, and Duke of Kalisz from 1193 to 1194.
He was the oldest son of Mieszko III the Old, Duke of Greater Poland( and since 1173, High Duke of Poland) by his first wife, Elisabeth, who was the daughter of King Béla II 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 the paternal grandfather of Stephen Of Greater Poland?