Frederick Browning
Lieutenant-General Sir Frederick Arthur Montague "Boy" Browning, (20 December 1896 – 14 March 1965) was a senior officer of the British Army who has been called the "father of the British airborne forces".
He was the commander of I Airborne Corps and deputy commander of First Allied Airborne Army during Operation Market Garden in September 1944.
During the planning for this operation, he memorably said: "I think we might be going a bridge too far."
He was also an Olympic bobsleigh competitor, and the husband of author Dame Daphne du Maurier.
Educated at Eton College and then at the Royal Military College, Sandhurst, Browning was commissioned as a second lieutenant into the Grenadier Guards in 1915.
During the First World War, he fought on the Western Front, and was awarded the Distinguished Service Order for conspicuous gallantry during the Battle of Cambrai in November 1917.
In September 1918, he became aide de camp to General Sir Henry Rawlinson.
After the war, he competed in the bobsleigh at the 1928 Winter Olympics in St. Moritz, Switzerland, in which his team finished tenth.
He married Daphne du Maurier in July 1932.
During the Second World War, Browning commanded the 1st Airborne Division and I Airborne Corps.
He led the latter during Operation Market Garden, travelling by glider to participate in the assault.
In December 1944 he became Chief of Staff of Admiral Lord Louis Mountbatten's South East Asia Command.
From September 1946 to January 1948, he was Military Secretary of the War Office.
In January 1948, Browning became Comptroller and Treasurer to Her Royal Highness Princess Elizabeth, Duchess of Edinburgh.
After she ascended to the throne to become Queen Elizabeth II in 1952, he became treasurer in the Office of the Duke of Edinburgh.
He suffered a severe nervous breakdown in 1957 and retired in 1959.
He died at Menabilly, the mansion that inspired his wife's novel "Rebecca", on 14 March 1965.
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.
Ogawa Mataji
Viscount was a general in the early Imperial Japanese Army.
He was also the father- in- law of Field Marshal Gen Sugiyama.
John Adams (merchant)
John Adams( 1672 or 1673 – 1745) was an American- born Canadian merchant and member of the Nova Scotia Council.
He was the father- in- law of Henry Newton( politician).
Wyndham Goold
Wyndham Goold( 1812-1854) was a Member of Parliament( MP) for County Limerick from 1850 to 1854.
Goold was educated at Westminster School and Trinity College, Dublin.
He was the son in law of Frederick Falkiner Goold, Archdeacon of Raphoe and brother in law of Bishop Hamilton Verschoyle
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.
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.
James Armour (Master mason)
James Armour (15 January 1730 – 20 September 1798) was a master mason and father of Jean Armour, and therefore the father-in-law of the poet Robert Burns.
Daphne du Maurier
Dame Daphne du Maurier, Lady Browning, (13 May 1907 – 19 April 1989) was an English author and playwright.
Although she is classed as a romantic novelist, her stories have been described as "moody and resonant" with overtones of the paranormal.
Her bestselling works were not at first taken seriously by critics, but have since earned an enduring reputation for narrative craft.
Many have been successfully adapted into films, including the novels "RebeccaMy Cousin Rachel", and "Jamaica Inn", and the short stories "The Birds" and "Don't Look Now/
Not After Midnight".
Du Maurier spent much of her life in Cornwall, where most of her works are set.
As her fame increased, she became more reclusive.
Her parents were the actor/manager Sir Gerald du Maurier and stage actress Muriel Beaumont.
Her grandfather was the cartoonist and writer George du Maurier.
John Vernou Bouvier III
John Vernou" Black Jack" Bouvier III( May 19, 1891 – August 3, 1957) was an American Wall Street stockbroker and socialite.
He was the father of First Lady Jacqueline Kennedy Onassis and of socialite Lee Radziwill, and was the father- in- law of John F. Kennedy.

Question: Who is Frederick Browning's father-in-law?
Answer: Gerald du Maurier