Louise of Anhalt-Dessau (1709–1732)
Louise, Princess of Anhalt- Bernburg( née Princess Louise of Anhalt- Dessau; 21 August 1709 – 29 July 1732) was the first wife and consort of Victor Frederick, Prince of Anhalt- Bernburg.
Christian Louis de Massy
Baron Christian Louis de Massy (born 17 January 1949) is the son of Princess Antoinette of Monaco, Baroness de Massy, and her husband, international tennis champion Alexandre-Athenase Noghès.
His grandfather, Antony Noghès, created the world-famous Monaco Grand Prix.
He was one of the two page boys at the wedding of his uncle Rainier III with Grace Kelly.
Princess Antoinette of Saxe-Altenburg
Princess Antoinette of Saxe- Altenburg( 17 April 1838 – 13 October 1908) was a princess of Saxe- Altenburg by birth and Duchess of Anhalt by marriage.
Prince Frederick of Schaumburg-Lippe
Prince Frederick of Schaumburg-Lippe (30 January 186812 December 1945) was a German prince and head of the Náchod branch of the princely house of Schaumburg-Lippe.
He was a son of Prince William of Schaumburg-Lippe, by his wife Princess Bathildis of Anhalt-Dessau.
Princess Antoinette of Anhalt
Princess Antoinette of Anhalt (3 March 1885 – 3 April 1963) was a Princess of Anhalt by birth.
As the wife of Prince Frederick of Schaumburg-Lippe, she became a Princess of Schaumburg-Lippe by marriage.
Ogawa Mataji
Viscount was a general in the early Imperial Japanese Army.
He was also the father- in- law of Field Marshal Gen Sugiyama.
Joachim Ernst, Duke of Anhalt
Joachim Ernst, Duke of Anhalt( 11 January 1901 – 18 February 1947) was the last ruler of the Duchy of Anhalt.
Alexandre-Athenase Noghès
Alexandre- Athenase Noghès( 15 June 1916 – 16 February 1999) was an international tennis champion, best known as the first husband of Princess Antoinette of Monaco, whom he married as his second wife on 4 December 1951.
Noghès was descended from the first Spanish commander of the Monaco garrison.
His grandfather Alexandre was the founder of the Monaco Automobile Club and former general treasurer of Monaco's state finances.
His father, Antony( 1890 – 1978), created the first Grand Prix ever raced in a city, the world- famous Grand Prix de Monaco.
Antony also created the renowned Rallye Monte Carlo and is credited with inventing the chequered flag.
Noghès entered into a liaison with Princess Antoinette of Monaco in the mid-1940s and three illegitimate children were born to the couple: Elisabeth- Anne( born 1947), Christian Louis( born 1949) and Christine- Alix( 1951–1989).
They were married in a civil ceremony in Genoa on 4 December 1951, and divorced three years later in 1954.
Following their divorce, Noghès lived for a time on his yacht before settling in the United States.
Elisabeth-Anne de Massy
Baroness Elisabeth-Anne de Massy Noghès (born 13 January 1947) is the daughter of Princess Antoinette of Monaco and Alexandre-Athenase Noghès.
She is a first cousin of the reigning Prince Albert II and niece of Rainier III.
She is the godmother of Princess Stéphanie of Monaco.
Although Elisabeth-Anne was born out of wedlock, her parents married in 1951, thus legitimizing her, and placing her in line to the throne.
Baroness Elisabeth Anne can represent the Sovereign Prince of Monaco at official events.
Leopold IV, Duke of Anhalt
Leopold IV Frederick, Duke of Anhalt (1 October 1794 – 22 May 1871) was a German prince of the House of Ascania.
From 1817 until 1853 he was ruler of the duchy of Anhalt-Dessau and from 1847 until 1853 also ruler of the duchy of Anhalt-Köthen.
From 1853 until 1863 he was the ruler of the joined duchy of Anhalt-Dessau-Köthen and from 1863 the first ruler of the united duchy of Anhalt.

Question: Who is Princess Antoinette Of Anhalt's father-in-law?
Answer: Prince William of Schaumburg-Lippe