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).
Judith of Hohenstaufen
Judith of Hohenstaufen, also known as" Judith of Hohenstaufen" or" Judith of Swabia"( – 7 July 1191), a member of the Hohenstaufen dynasty, was Landgravine of Thuringia from 1150 until 1172 by her marriage with the Ludovingian landgrave Louis II.
She was baptized as" Judith", but was commonly called" Jutta" or" Guta".
Sometimes the Latinate form" Clementia" was used, or" Claritia" or" Claricia".
Judith of Brittany
Judith of Brittany, also called Judith of Rennes( 982–1017), was Duchess of Normandy from until her death.
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.
Judith of Poland
Judith of Poland( b. 1130/35 – died 8 July 1171/ 75), was a Polish princess member of the House of Piast and by marriage Margravine of Brandenburg.
She was the daughter of Bolesław III Wrymouth, Duke of Poland, by his second wife Salomea, daughter of Henry, Count of Berg.
She was probably named after either her paternal grandmother, Judith of Bohemia or her older half- sister, Princess consort of Murom.
Judith of Bohemia
Judith of Bohemia (c. 1056/58 – 25 December 1086), also known as Judith Přemyslid, was a Bohemian princess of the Přemyslid dynasty, and Duchess of Poland by marriage.
She was a daughter of Duke Vratislaus II of Bohemia by his second wife Adelaide, daughter of King Andrew I of Hungary.
She was named after her paternal grandmother Judith of Schweinfurt, who died shortly after her birth.
Margaret of Bohemia, Duchess of Wroclaw
Margaret of Bohemia( 21 February 1296 – 8 April 1322) was a daughter of Wenceslaus II of Bohemia and his first wife, Judith of Habsburg.
Adelaide of Hungary
Adelaide of Hungary( – 27 January 1062) was the only daughter of King Andrew I of Hungary of the Árpád dynasty and Anastasia of Kiev.
She was the second wife of Vratislav II of Bohemia, whom she married in 1058.
She was a good dynastic match for Vratislav, as he profited from the alliance with her father.
They had four children, including Bretislaus II of Bohemia and Judith of Bohemia.
Vratislav became duke in 1061 after death of his brother, thus Adelaide was duchess for only a short time before her death early in 1062.
Her husband remarried shortly after her death to Świętosława of Poland and was later crowned as the first King of Bohemia in 1085.
Vratislaus II of Bohemia
Vratislaus (or Wratislaus)
II
(d. 14 January 1092), the son of Bretislaus I and Judith of Schweinfurt, was the first King of Bohemia as of 15 June 1085, his royal title granted as a lifetime honorific from Holy Roman Emperor Henry IV that did not establish a hereditary monarchy.
Before his elevation to the royal dignity, Vratislaus had ruled Bohemia as duke since 1061.
On his father's death in 1055, Vratislaus became duke of Olomouc, whereas his older brother became Duke of Bohemia as Spytihněv II.
He fell out with his brother and was exiled to Hungary.
Vratislaus regained the ducal throne of Olomouc with Hungarian assistance and eventually reconciled with his brother, then succeeded him as duke of Bohemia when he died in 1061.
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.

Question: Who is Judith Of Bohemia's paternal grandfather?
Answer: Bretislaus I