Question: Who is Elizabeth Of Pomerania's father-in-law?

Knowledge 1: Elizabeth of Pomerania
Elizabeth of Pomerania (– 15 April 1393) was the fourth and final wife of Charles IV, Holy Roman Emperor and king of Bohemia.Her parents were Bogislaw V, Duke of Pomerania, and Elisabeth of Poland.Her maternal grandparents were Casimir III, King of Poland, and Aldona of Lithuania. [SEP] Knowledge 2: Charles IV, Holy Roman Emperor
Charles IV (14 May 1316 – 29 November 1378), born Wenceslaus, was the first King of Bohemia to become Holy Roman Emperor.He was a member of the House of Luxembourg from his father's side and the Czech House of Přemyslid from his mother's side; he emphasized the latter due to his lifelong affinity for the Czech side of his inheritance, and also because his direct ancestors in the Přemyslid line included two saints.He was the eldest son and heir of King John of Bohemia, who died at the Battle of Crécy on 26 August 1346.His mother, Elizabeth of Bohemia, was the sister of King Wenceslas III, the last of the male Přemyslid rulers of Bohemia.Charles inherited the County of Luxembourg from his father and was elected king of the Kingdom of Bohemia.On 2 September 1347, Charles was crowned King of Bohemia.On 11 July 1346, the prince-electors chose him as King of the Romans ("rex Romanorum") in opposition to Emperor Louis IV.Charles was crowned on 26 November 1346 in Bonn.After his opponent died, he was re-elected in 1349 and crowned King of the Romans.In 1355, he was crowned King of Italy and Holy Roman Emperor.With his coronation as King of Burgundy in 1365, he became the personal ruler of all the kingdoms of the Holy Roman Empire.
Knowledge 1: Elizabeth of Pomerania
Elizabeth of Pomerania (– 15 April 1393) was the fourth and final wife of Charles IV, Holy Roman Emperor and king of Bohemia.Her parents were Bogislaw V, Duke of Pomerania, and Elisabeth of Poland.Her maternal grandparents were Casimir III, King of Poland, and Aldona of Lithuania. [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: Charles IV, Holy Roman Emperor
Charles IV (14 May 1316 – 29 November 1378), born Wenceslaus, was the first King of Bohemia to become Holy Roman Emperor.He was a member of the House of Luxembourg from his father's side and the Czech House of Přemyslid from his mother's side; he emphasized the latter due to his lifelong affinity for the Czech side of his inheritance, and also because his direct ancestors in the Přemyslid line included two saints.He was the eldest son and heir of King John of Bohemia, who died at the Battle of Crécy on 26 August 1346.His mother, Elizabeth of Bohemia, was the sister of King Wenceslas III, the last of the male Přemyslid rulers of Bohemia.Charles inherited the County of Luxembourg from his father and was elected king of the Kingdom of Bohemia.On 2 September 1347, Charles was crowned King of Bohemia.On 11 July 1346, the prince-electors chose him as King of the Romans ("rex Romanorum") in opposition to Emperor Louis IV.Charles was crowned on 26 November 1346 in Bonn.After his opponent died, he was re-elected in 1349 and crowned King of the Romans.In 1355, he was crowned King of Italy and Holy Roman Emperor.With his coronation as King of Burgundy in 1365, he became the personal ruler of all the kingdoms of the Holy Roman Empire. [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.

Answer: John of Bohemia