Pengiran Anak Mohammad Alam
"Al Marhum Pengiran Pemancha Sahibul Rae' Wal Mashuarah Pengiran Anak" Haji Mohammad Alam Ibni Al Marhum Pengiran Bendahara Pengiran Anak Abdul Rahman (18 October 1918 - 14 December 1982) was the fourth Speaker of the Brunei Legislative Council, serving from 14 July 1971 until 30 November 1974.
He was the father of Pengiran Anak Saleha, the current Queen consort of Hassanal Bolkiah, the current Sultan of Brunei.
He was also the uncle and father-in-law of the Sultan.
He was also a maternal grandfather of Al-Muhtadee Billah, the Crown Prince.
Queen Saleha of Brunei
Saleha( full name:" Raja Isteri Pengiran Anak" Hajah Saleha binti Al- Marhum" Pengiran Pemancha Pengiran Anak" Haji Mohamed Alam; born 7 October 1946) is the Queen consort of Brunei as the wife of Sultan Hassanal Bolkiah, the current Sultan of Brunei.
She was the daughter of Pengiran Pemancha Pengiran Anak Haji Mohammad Alam and Pengiran Anak Hajah Besar.
After her husband was crowned as the Sultan and Yang Di- Pertuan of Brunei, she succeeded her mother- in- law, Pengiran Anak Damit, as Raja Isteri( Queen consort).
She is the mother of Crown Prince Al- Muhtadee Billah.
Ogawa Mataji
Viscount was a general in the early Imperial Japanese Army.
He was also the father- in- law of Field Marshal Gen Sugiyama.
Al-Muhtadee Billah
Crown Prince Haji Al-Muhtadee Billah (born 17 February 1974) is the eldest son of Sultan Hassanal Bolkiah and his wife Princess Saleha binti Mohammad Alam.
He is the Crown Prince of Brunei Darussalam and is first in the line of succession to the Bruneian throne.
Al-Muhtadee Billah holds the position of senior minister of the Prime Minister's Office of Brunei, General of the Royal Brunei Armed Forces and Deputy Inspector General of the Royal Brunei Police Force.
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.
Sarah, Crown Princess of Brunei
"Pengiran Anak Isteri Pengiran Anak" Sarah (Jawi:
ڤڠيرن انق استري
ڤڠيرن انق ساراه)
(born 9 April 1987) is the wife of the Crown Prince of Brunei, Al-Muhtadee Billah and born as the daughter of a distant member of the royal family.
While attending a pre-university course at 17, she married the Crown Prince.
The couple have four children.
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).
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.
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.
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.

Question: Who is the father-in-law of Sarah, Crown Princess Of Brunei?
Answer: Hassanal Bolkiah