Question: Who is Infanta Marie Anne Of Portugal's father-in-law?

Knowledge 1: Infanta Marie Anne of Portugal
Infanta Marie Anne of Portugal (13 July 1861 – 31 July 1942) was Grand Duchess of Luxembourg as the wife of Grand Duke Guillaume IV and the country's regent in the name of their daughter, Grand Duchess Marie-Adélaïde.She was a member of the House of Braganza. [SEP] Knowledge 2: 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.
Knowledge 1: Infanta Marie Anne of Portugal
Infanta Marie Anne of Portugal (13 July 1861 – 31 July 1942) was Grand Duchess of Luxembourg as the wife of Grand Duke Guillaume IV and the country's regent in the name of their daughter, Grand Duchess Marie-Adélaïde.She was a member of the House of Braganza. [SEP] Knowledge 2: Barthold A. Butenschøn Sr.
Hans Barthold Andresen Butenschøn( 27 December 1877 – 28 November 1971) was a Norwegian businessperson.He was born in Kristiania as a son of Nils August Andresen Butenschøn and Hanna Butenschøn, and grandson of Nicolay Andresen.Together with Mabel Anette Plahte( 1877 – 1973, a daughter of Frithjof M. Plahte) he had the son Hans Barthold Andresen Butenschøn Jr. and was through him the father- in- law of Ragnhild Butenschøn and grandfather of Peter Butenschøn.Through his daughter Marie Claudine he was the father- in- law of Joakim Lehmkuhl, through his daughter Mabel Anette he was the father- in- law of Harald Astrup( a son of Sigurd Astrup) and through his daughter Nini Augusta he was the father- in- law of Ernst Torp.He took commerce school and agricultural school.He was hired in the family company N. A. Andresen& Co, and became a co-owner in 1910.He eventually became chief executive officer.The bank changed its name to Andresens Bank in 1913 and merged with Bergens Kreditbank in 1920.The merger was dissolved later in the 1920s.He was also a landowner, owning Nedre Skøyen farm and a lot of land in Enebakk.He chaired the board of Nydalens Compagnie from 1926, having not been a board member before that.He also chaired the supervisory council of Forsikringsselskapet Viking and Nedre Glommen salgsforening, and was a supervisory council member of Filharmonisk Selskap.He was a member of the gentlemen's club SK Fram since 1890, and was proclaimed a lifetime member in 1964.He was buried in Enebakk.
Knowledge 1: 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. [SEP] Knowledge 2: 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.

Answer: Adolphe