Beatrice of Luxembourg
Beatrice of Luxembourg( 1305 – 11 November 1319), was by birth member of the House of Luxembourg and by marriage Queen of Hungary.
She was the youngest child of Henry VII, Holy Roman Emperor and his wife, Margaret of Brabant.
Her two siblings were John of Luxembourg and Marie of Luxembourg, Queen of France.
Princess Sophie of Sweden
Princess Sophie of Sweden
(Sofia Vilhelmina Katarina Maria Lovisa Charlotta Anna; 21 May 1801 – 6 July 1865) was, by marriage, Grand Duchess of Baden as the wife of sovereign Grand Duke of Baden, Leopold.
Princess Marie Eleonore of Albania
Princess Marie Eleonore of Albania( Marie Eleonore Elisabeth Cecilie Mathilde Lucie Prinzessin von Wied; 19 February 190929 September 1956) was the only daughter of William, Prince of Albania and his wife Princess Sophie of Schönburg- Waldenburg.
She held the title of" Princess of Albania".
She was also styled Donika, in homage to Donika Kastrioti.
Archduke Ludwig Viktor of Austria
Archduke Ludwig Viktor Joseph Anton of Austria( 15 May 1842 – 18 January 1919) from the House of Habsburg was the youngest son born to Archduke Franz Karl of Austria and Princess Sophie of Bavaria and younger brother of Emperor Franz Joseph I of Austria.
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.
Princess Sophie of Romania
Princess Sophie of Romania( born 29 October 1957) is the fourth daughter of King Michael I and Queen Anne of Romania.
Princess Christina Margarethe of Hesse
Princess Christina Margarethe of Hesse( 10 January 1933 – 22 November 2011) was the eldest daughter of Prince Christoph of Hesse, nephew of Germany's last emperor Wilhelm II, and of Princess Sophie of Greece and Denmark.
A niece by marriage of Elizabeth II of the United Kingdom, from 1956 to 1962 she was married to Prince Andrew of Yugoslavia, a son of Alexander I of Yugoslavia.
William IV, Grand Duke of Luxembourg
William IV (William Alexander; "French:
Guillaume Alexandre"; 22 April 1852 – 25 February 1912) reigned as the Grand Duke of Luxembourg from 17 November 1905 until his death.
He succeeded his father, Adolphe.
William was a Protestant, the religion of the House of Nassau.
He married Princess Marie Anne of Portugal, believing that a Roman Catholic country ought to have a Roman Catholic monarch.
Thus his heirs have been Catholic.
At the death of his uncle, Prince Nikolaus-Wilhelm in 1905, the only other legitimate male in the House of Nassau-Weilburg was William's cousin, Georg Nikolaus, Count of Merenberg, the product of a morganatic marriage.
So in 1907, William declared the Counts of Merenberg non-dynastic, naming his own eldest daughter Marie-Adélaïde (1894–1924) as heir presumptive to the grand ducal throne.
She became Luxembourg's first reigning grand duchess upon her father's death in 1912, and upon her own abdication in 1919, was succeeded by her younger sister Charlotte (1896–1985).
Charlotte's descendants reign until the present day.
He was the last monarch of Luxembourg to die whilst still on the throne.
Marie of Luxembourg, Queen of France
Marie of Luxembourg( 1304 – 26 March 1324), was by birth member of the House of Luxembourg and by marriage Queen of France and Navarre.
She was the daughter of Henry VII, Holy Roman Emperor and Margaret of Brabant.
Her two siblings were John of Luxembourg and Beatrice of Luxembourg, Queen of Hungary.
Princess Sophie of Luxembourg
Princess Sophie Caroline Marie Wilhelmine of Luxembourg (14 February 1902 – 24 May 1941) was the sixth and youngest daughter of Grand Duke William IV and his wife, Infanta Marie Anne of Portugal.

Question: Who is the paternal grandfather of Princess Sophie Of Luxembourg?
Answer: Adolphe