Frederick III of Sicily
Frederick II (or III) (13 December 1272 – 25 June 1337) was the regent (from 1291) and subsequent King of Sicily from 1295 until his death.
He was the third son of Peter III of Aragon and served in the War of the Sicilian Vespers on behalf of his father and brothers, Alfonso ΙΙΙ and James ΙΙ.
He was confirmed as King of Trinacria (another name for the island of Sicily) by the Peace of Caltabellotta in 1302.
His reign saw important constitutional reforms: the "Constitutiones regalesCapitula alia", and "Ordinationes generales".
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.
Adelaide del Vasto
Adelaide del Vasto( Adelasia, Azalaïs)( – 16 April 1118) was countess of Sicily as the third spouse of Roger I of Sicily, and Queen consort of Jerusalem by marriage to Baldwin I of Jerusalem.
She served as regent of Sicily during the minority of her son Roger II of Sicily from 1101 until 1112.
Margaret of Sicily
Margaret of Sicily( also called Margaret of Hohenstaufen or Margaret of Germany)( 1 December 1241, in Foggia – 8 August 1270, in Frankfurt- am- Main) was a Princess of Sicily and Germany, and a member of the House of Hohenstaufen.
By marriage she was Landgravine of Thuringia and Countess Palatine of Saxony( German:" Landgräfin von Thüringen und Pfalzgräfin von Sachsen").
She was the daughter of Frederick II, Holy Roman Emperor, King of Sicily and Germany, by his third wife, Isabella of England.
Her paternal grandparents were Henry VI, Holy Roman Emperor and Constance of Sicily.
Her maternal grandparents were John of England and Isabella of Angoulême.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
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
Margaret of Sicily, Countess Palatine of the Rhine
Margaret of Sicily or Margherita di Sicilia-Aragona (1331 in Palermo – 1377 in Neustadt) was a Sicilian princess, daughter of the King Frederick III of Sicily and his wife Eleanor of Anjou.
In 1348 she married Rudolf II, Count Palatine of the Rhine, and was Countess Palatine of the Rhine until 1353, year of the husband's death.
Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.
He was the grandfather of singer/ poet Leonard Cohen.
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.
Margaret of Burgundy, Queen of Sicily
Margaret of Burgundy( 1250 – 4 September 1308) was Queen of Sicily and Naples by marriage to Charles I of Sicily.
She was also a ruling Countess of Tonnerre from 1262 until 1308.

Question: Who is the paternal grandfather of Margaret Of Sicily, Countess Palatine Of The Rhine?
Answer: Peter III of Aragon