Ludmilla of Bohemia
Ludmilla of Bohemia (died 14 August 1240) was a daughter of Frederick, Duke of Bohemia, and his wife, Elizabeth of Hungary.
Ludmilla was a member of the Přemyslid dynasty.
She was Duchess consort of Bavaria by her marriage to Louis I, Duke of Bavaria.
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.
Fred Le Deux
Frederick" Fred" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL).
He is the grandfather of Tom Hawkins.
Otto II, Holy Roman Emperor
Otto II (955 – December 7, 983), called the Red ("Rufus"), was Holy Roman Emperor from 973 until his death in 983.
A member of the Ottonian dynasty, Otto II was the youngest and sole surviving son of Otto the Great and Adelaide of Italy.
Otto II was made joint-ruler of Germany in 961, at an early age, and his father named him co-Emperor in 967 to secure his succession to the throne.
His father also arranged for Otto II to marry the Byzantine Princess Theophanu, who would be his wife until his death.
When his father died after a 37-year reign, the eighteen-year-old Otto II became absolute ruler of the Holy Roman Empire in a peaceful succession.
Otto II spent his reign continuing his father's policy of strengthening Imperial rule in Germany and extending the borders of the Empire deeper into southern Italy.
Otto II also continued the work of Otto I in subordinating the Catholic Church to Imperial control.
Early in his reign, Otto II defeated a major revolt against his rule from other members of the Ottonian dynasty who claimed the throne for themselves.
His victory allowed him to exclude the Bavarian line of the Ottonians from the line of Imperial succession.
This strengthened his authority as Emperor and secured the succession of his own son to the Imperial throne.
With domestic affairs settled, Otto II would focus his attention from 980 onward to annexing the whole of Italy into the Empire.
His conquests brought him into conflict with the Byzantine Empire and with the Muslims of the Fatimid Caliphate, who both held territories in southern Italy.
After initial successes in unifying the southern Lombard principalities under his authority and in conquering Byzantine-controlled territory, Otto II's campaigns in southern Italy ended in 982 following a disastrous defeat by the Muslims.
While he was preparing to counterattack Muslim forces, a major uprising by the Slavs broke out in 983, forcing the Empire to abandon its major territorial holdings east of the Elbe river.
Otto II died suddenly in 983 at the age of 28 after a ten-year reign.
He was succeeded as Emperor by his three-year-old son Otto III, plunging the Empire into a political crisis.
Henry Krause
Henry J." Red" Krause, Jr.( August 28, 1913 – February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.
He played college football at St. Louis University.
He is the grandfather of Jennifer Krause
He is the great grandfather of Payton Hoeing
Matilda of Germany, Countess Palatine of Lotharingia
Matilda of Germany or" Matilde of Saxony"( Summer 979- November 1025, Echtz) was the third daughter of Otto II, Holy Roman Emperor and his wife, Empress Theophanu.
Otto II, Duke of Bavaria
Otto II of Bavaria (7 April 1206 in Kelheim – 29 November 1253) known as Otto the Illustrious was the Duke of Bavaria and Count Palatine of the Rhine (see Electorate of the Palatinate).
He was the son of Ludwig
I and Ludmilla of Bohemia and a member of the Wittelsbach dynasty.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Otto II, Count of Guelders
Otto II, Count of Guelders( Dutch: Otto II, Graaf van Gelre) was a nobleman from the 13th century.
He was the son of Gerard III, Count of Guelders and Margaretha of Brabant.
Agnes of the Palatinate
Agnes of the Palatinate( 1201 – 1267) was a daughter of Henry V, Count Palatine of the Rhine and his first wife Agnes of Hohenstaufen, daughter of Conrad, Count Palatine of the Rhine.
Agnes was Duchess of Bavaria by her marriage to Otto II Wittelsbach, Duke of Bavaria.

Question: Who is Otto Ii, Duke Of Bavaria's maternal grandfather?
Answer: Frederick, Duke of Bohemia