Princess Louise of Thurn and Taxis
Princess Louise of Thurn and Taxis( 1 June 1859, Schloss Taxis, Dischingen, Kingdom of Württemberg – 20 June 1948, Sigmaringen, Germany)
Princess Charlotte of Prussia (1831–1855)
Princess Charlotte of Prussia( 21 June 1831 – 30 March 1855), was by birth a Princess of Prussia and member of the House of Hohenzollern and by marriage Hereditary Princess of Saxe- Meiningen.
She was the eldest child and daughter of Prince Albert of Prussia( younger son of Frederick William III of Prussia and Louise of Mecklenburg- Strelitz) and his first wife Princess Marianne of the Netherlands( daughter of William I of the Netherlands and Wilhelmine of Prussia).
Princess Louise of Prussia (1770–1836)
Princess Frederica Dorothea "Louise" Philippine of Prussia (24 May 1770 - 7 December 1836) was a member of the House of Hohenzollern.
She was a niece of Frederick the Great, being the second daughter and third child of Prince Augustus Ferdinand of Prussia by his wife Margravine Elisabeth Louise of Brandenburg-Schwedt.
Louise and her husband Prince Antoni Radziwiłł were popular for their patronage of music, as well as their prominent positions in Berlin society.
Louise is also notable for being the mother of Elisabeth Radziwill, the childhood love of future German Emperor Wilhelm I, whose strong desire to marry her was thwarted out of considerations for Elisabeth's inequality of rank.
Antoni Radziwiłł
Prince Antoni Henryk Radziwiłł (13 June 1775 – 7 April 1833) was a Polish and Prussian noble, aristocrat, musician and politician.
Initially a hereditary Duke of Nieśwież and Ołyka, as a scion of the Radziwiłł family he also held the honorific title of a "Reichsfürst" of the Holy Roman Empire.
Between 1815 and 1831 he acted as "Duke-Governor"  of the Grand Duchy of Posen, an autonomous province of the Kingdom of Prussia created out of Greater Polish lands annexed in the Partitions of Poland.
Princess Louise of Prussia (1808–1870)
Princess Louise of Prussia (1 February 1808 – 6 December 1870) was the third surviving daughter and ninth child of Frederick William III of Prussia and Louise of Mecklenburg-Strelitz.
Princess Louise of Denmark (1750–1831)
Princess Louise of Denmark and Norway( 20 January 1750 – 12 January 1831) was born to Frederick V of Denmark and Louise of Great Britain.
Her eldest daughter, Marie of Hesse- Kassel, was the wife of Frederick VI of Denmark.
Prince Albert of Prussia (1809–1872)
Prince Frederick Henry Albert of Prussia (4 October 1809 – 14 October 1872) was the fifth son and youngest child of King Frederick William III of Prussia and Louise of Mecklenburg-Strelitz.
His parents had fled to East Prussia after the occupation of Berlin by Napoleon, and Albert was born in Königsberg.
Two of Albert's elder brothers were Frederick William IV, King of Prussia from 1840 till 1861, and William I, King of Prussia from 1861 to 1888 and German Emperor from 1871 until 1888.
Princess Louise of Denmark (1875–1906)
Princess Louise of Denmark(" Louise Caroline Josephine Sophie Thyra Olga")( 17 February
1875 – 4 April 1906) was a Danish princess, the third child and oldest daughter of Frederick VIII of Denmark and his wife, Princess Louise of Sweden and Norway.
Countess Maria Louise Albertine of Leiningen-Dagsburg-Falkenburg
Countess Maria Louise Albertine of Leiningen- Dagsburg- Falkenburg( 16 March 1729 – 11 March 1818); also known as Princess George, was heiress to the barony of Broich and by marriage Princess of Hesse- Darmstadt.
She was the grandmother and educator of Princess Louise of Mecklenburg- Strelitz, who later became Queen consort of Prussia.
Bogusław Fryderyk Radziwiłł
Bogusław Fryderyk Radziwiłł (3 January 1809 – 2 January 1873) was a Polish nobleman and Prussian military officer and politician.
At the time Poland was partitioned, he lived in the Kingdom of Prussia, where he was a member of the Prussian parliament (later, of the Prussian House of Lords).
He attained the rank of general within the Prussian Army.
His father, Prince Antoni Henryk Radziwiłł, was also the "Duke-Governor"  of the Grand Duchy of Poznań, an autonomous province of the Kingdom of Prussia.
His mother was Princess Louise of Prussia, and through her, he was great-grandson of King Frederick William I of Prussia, great-great-grandson of King George I of Great Britain, cousin of William I, German Emperor and Tsar Alexander II of Russia.
He was the father of Edmund Radziwiłł and Ferdynand Radziwiłł.
Radziwiłł was born in Königsberg and died in Berlin.

Question: What is the date of death of Princess Louise Of Prussia (1770–1836)'s husband?
Answer: 7 April 1833