Marjorie Pratt, Countess of Brecknock
Marjorie Minna Jenkins Pratt, Countess of Brecknock( died 24 August 1989), was a British peeress.
She was the daughter of Colonel Atherton Edward Jenkins and his wife, Anna Isabella( née Schoenbrunn), the niece of Sir Ernest Cassel.
She was a cousin( and life- long close friend) of Edwina Ashley, who married Lord Louis Mountbatten, 1st Earl Mountbatten of Burma.
Edwina Mountbatten, Countess Mountbatten of Burma
Edwina Cynthia Annette Mountbatten, Countess Mountbatten of Burma, ("née" Ashley; 28 November 1900 – 21 February 1960) was an English heiress, socialite, relief worker and the last Vicereine of India as wife of Louis Mountbatten, 1st Earl Mountbatten of Burma.
While in India she was a very close friend of the prime minister, Jawaharlal Nehru.
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.
Patricia Knatchbull, 2nd Countess Mountbatten of Burma
Patricia Edwina Victoria Knatchbull, 2nd Countess Mountbatten of Burma,( née Mountbatten; 14 February 1924 – 13 June 2017), was a British peeress and the third cousin of Queen Elizabeth II.
She was the elder daughter of heiress Edwina Ashley, a patrilineal descendant of the Earls of Shaftesbury, first ennobled in 1661, and Admiral of the Fleet the 1st Earl Mountbatten of Burma.
She was the elder sister of Lady Pamela Hicks, first cousin to Prince Philip, Duke of Edinburgh, and the last surviving baptismal sponsor to Prince Charles, Prince of Wales.
Lady Mountbatten succeeded her father when he was assassinated in 1979, as his peerages had been created with special remainder to his daughters and their heirs male.
This inheritance accorded her the title of" countess" and a seat in the House of Lords, where she remained until 1999, when the House of Lords Act 1999 removed most hereditary peers from the House.
Louis Mountbatten, 1st Earl Mountbatten of Burma
Admiral of the Fleet Louis Francis Albert Victor Nicholas Mountbatten, 1st Earl Mountbatten of Burma (born Prince Louis of Battenberg; 25 June 1900 – 27 August 1979) was a British Royal Navy officer and , an uncle of Prince Philip, Duke of Edinburgh, and second cousin once removed of Queen Elizabeth II.
During the Second World War, he was Supreme Allied Commander, South East Asia Command (1943–1946).
He was the last viceroy of India (1947) and the first governor-general of independent India (1947–1948).
From 1954 to 1959, Mountbatten was First Sea Lord, a position that had been held by his father, Prince Louis of Battenberg, some forty years earlier.
Thereafter he served as chief of the Defence Staff until 1965, making him the longest-serving professional head of the British Armed Forces to date.
During this period Mountbatten also served as chairman of the NATO Military Committee for a year.
In 1979, Mountbatten was assassinated by a bomb set by members of the Provisional Irish Republican Army, hidden aboard his fishing boat in Mullaghmore, County Sligo, Ireland.
Lady Pamela Hicks
Lady Pamela Carmen Louise Hicks, DCVO(" née" Mountbatten; born 19 April 1929) is a British aristocrat.
She is the younger daughter of the 1st Earl Mountbatten of Burma by his wife, Edwina Mountbatten.
Through her father, Lady Pamela is a first cousin of Prince Philip, Duke of Edinburgh, and a great niece of the last Empress of Russia, Alexandra Feodorovna.
Penelope Knatchbull, Countess Mountbatten of Burma
Penelope Meredith Mary Knatchbull, Countess Mountbatten of Burma,( née Eastwood; born 16 April 1953), known until 2005 as Lady Romsey, and until 2017 as The Lady Brabourne, is the wife of The Rt. Hon Norton Louis Philip Knatchbull, 3rd Earl Mountbatten of Burma, and a British peeress.
Peter Burroughs
Peter Burroughs( born 27 January 1947) is a British television and film actor, the director of Willow Management.
He is the father- in- law of actor and TV presenter Warwick Davis.
Ogawa Mataji
Viscount was a general in the early Imperial Japanese Army.
He was also the father- in- law of Field Marshal Gen Sugiyama.
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.

Question: Who is the father-in-law of Edwina Mountbatten, Countess Mountbatten Of Burma?
Answer: Prince Louis of Battenberg