Princess Caroline-Mathilde of Denmark
Princess Caroline- Mathilde of Denmark( 27 April 1912 – 12 December 1995) was a daughter of Prince Harald of Denmark and granddaughter of King Frederick VIII of Denmark.
As the wife of Knud, Hereditary Prince of Denmark, she became Hereditary Princess of Denmark.
Ludwig von Westphalen
Johann Ludwig von Westphalen( 11 July 1770 – 3 March 1842) was a liberal Prussian civil servant and the father- in- law of Karl Marx.
Duke Henry of Mecklenburg-Schwerin
Duke Henry of Mecklenburg- Schwerin( 19 April 1876 – 3 July 1934) was prince consort of the Netherlands as the husband of Queen Wilhelmina of the Netherlands.
He was the longest- serving consort of the Netherlands.
Margrethe II of Denmark
Margrethe II (full name: "Margrethe Alexandrine Þórhildur Ingrid"; born 16 April 1940) is Queen of Denmark, as well as the supreme authority of the Church of Denmark and commander-in-chief of the Danish Defence.
Born into the House of Glücksburg, a royal house with origins in northern Germany, she was the eldest child of Frederick IX of Denmark and Ingrid of Sweden.
She became heir presumptive to her father in 1953, when a constitutional amendment allowed women to inherit the throne.
Margrethe succeeded her father upon his death on 14 January 1972.
On her accession, she became the first female monarch of Denmark since Margrethe I, ruler of the Scandinavian kingdoms in 1375–1412 during the Kalmar Union.
In 1967, she married Henri de Laborde de Monpezat, with whom she has two sons: Crown Prince Frederik and Prince Joachim.
She has been on the Danish throne for years, becoming the second-longest-reigning Danish monarch after her ancestor Christian IV.
Takatsukasa Fusako
, also known as, was an empress consort of Japan.
She was the consort of Emperor Reigen.
Henrik, Prince Consort of Denmark
Prince Henrik of Denmark (born Henri Marie Jean André de Laborde de Monpezat; 11 June 1934 – 13 February 2018) was the husband of Queen Margrethe II of Denmark.
Henrik was born in the French commune of Talence near Bordeaux to an old French family, the Laborde de Monpezats.
He spent his early years in Tonkin in French Indochina (now part of Vietnam), where his family had lived for many years.
The family spent the Second World War at the family home in Cahors, France.
They returned to French Indochina after the war.
However, they were forced to flee following the defeat of the French in the First Indochina War.
After completing his education in France and Vietnam, Henrik served in the French Army during the Algerian War.
Prior to his marriage to Margrethe, he worked in the diplomatic service.
He married Margrethe at the Church of Holmen on 10 June 1967 and became her prince consort when she succeeded her father, King Frederick IX, as monarch of Denmark on 14 January 1972.
He had two sons, Crown Prince Frederik (born 1968) and Prince Joachim (born 1969), and eight grandchildren.
Throughout his time as Prince consort, Henrik voiced his displeasure with the fact that he never received the title of king.
A keen winemaker, Henrik produced his own wine at his estate in France.
He also published many works of poetry.
He was the first male consort to a Danish monarch.
Henrik retired from his royal duties on 1 January 2016, at the age of 81.
He died in Fredensborg Palace on 13 February 2018, after a short illness.
Ogawa Mataji
Viscount was a general in the early Imperial Japanese Army.
He was also the father- in- law of Field Marshal Gen Sugiyama.
Baroness Gösta von dem Bussche-Haddenhausen
Baroness Gösta von dem Bussche- Haddenhausen( 26 January 1902 – 13 June 1996) was the mother of Prince Claus of the Netherlands, who was the Prince Consort of Queen Beatrix of the Netherlands, thus making her the mother- in- law of the former Dutch Queen.
She is also the paternal grandmother of King Willem- Alexander of the Netherlands, who is the current Dutch King.
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.
Frederik, Crown Prince of Denmark
Frederik, Crown Prince of Denmark, Count of Monpezat,( Frederik André Henrik Christian; born 26 May 1968) is the heir apparent to the throne of Denmark.
Frederik is the elder son of Queen Margrethe II and the late Henrik, Prince Consort.

Question: Who is the father-in-law of Henrik, Prince Consort Of Denmark?
Answer: Frederick IX of Denmark