Margaret of Bohemia, Duchess of Bavaria
Margaret of Bohemia( 1313–1341) was the daughter of King John of Bohemia by his first wife Elisabeth of Bohemia( 1292–1330).
Wenceslaus I, Duke of Luxembourg
Wenceslaus I( also" WenceslasVenceslasWenzel", or" Václav", often called Wenceslaus of Bohemia in chronicles)( 25 February 1337 – 7 December 1383) was the first Duke of Luxembourg from 1354.
He was the son of John the Blind, King of Bohemia, and Beatrice of Bourbon.
Anne of Bohemia, Duchess of Austria
Anne of Bohemia( 27 March 1323 – 3 September 1338), also known as" Anna of Luxembourg", was a daughter of John of Bohemia and his first wife, Elizabeth of Bohemia.
Anne was a member of the House of Luxemburg.
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.
Wenceslaus I of Bohemia
Wenceslaus I (c. 1205 – 23 September 1253), called One-Eyed, was King of Bohemia from 1230 to 1253.
Wenceslaus was a son of Ottokar I of Bohemia and his second wife Constance of Hungary.
Elizabeth of Bohemia (1292–1330)
Elizabeth of Bohemia( 20 January 1292 – 28 September 1330) was a princess of the Bohemian Přemyslid dynasty who became queen consort of Bohemia as the first wife of King John the Blind.
She was the mother of Emperor Charles IV, King of Bohemia.
Beatrice of Bohemia
Beatrice of Bohemia (1225–1290) was a daughter of King Wenceslaus I of Bohemia and his wife Kunigunde of Hohenstaufen.
She married Margrave Otto III and was the mother of:
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.
Anne of Bohemia (1290–1313)
Anne of Bohemia( 1290 –1313) was the eldest surviving daughter of Wenceslaus II of Bohemia and Poland and his first wife Judith of Habsburg.
Her siblings included Elisabeth of Bohemia and Wenceslaus III of Bohemia.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.

Question: Who is Beatrice Of Bohemia's paternal grandfather?
Answer: Ottokar I of Bohemia