Catherine of Cleves (1417–1479)
Catherine of Cleves (25 May 1417 – 10 February 1479) was Duchess of Guelders by marriage to Arnold, Duke of Guelders.
She acted as regent of Guelders during the absence of her spouse in 1450.
The Hours of Catherine of Cleves was commissioned for her.
Abdul-Vahed Niyazov
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Prince Dmitri Alexandrovich of Russia
Prince Dmitri Alexandrovich of Russia( 15 August 1901 – 7 July 1980) was the fourth son and fifth child of Grand Duke Alexander Mikhailovich of Russia and Grand Duchess Xenia Alexandrovna of Russia.
He was a nephew of Tsar Nicholas II of Russia.
Matryona Balk
Matryona Ivanovna Balk( née Modesta Mons; fl. 1718), was a Russian courtier.
She was a lady- in- waiting and confidant of Catherine I of Russia, Ober- Hofmeisterin of Tsarevna Catherine Ivanovna of Russia and sister of Anna Mons.
She was accused in 1718 for having assisted the empress in her love affair with Willem Mons.
Catherine of Bosnia, Grand Princess of Hum
" For other people named Catherine of Bosnia, see Catherine of Bosnia( disambiguation)."
Catherine of Bosnia( Bosnian:" Katarina Kotromanić Stjepanova")( b. 1294- d. 1355) was sister of Stephen II, Ban of Bosnia.
Catherine I of Russia
Catherine I (born , later known as Marta Samuilovna Skavronskaya; –) was the second wife of Peter the Great and Empress of Russia from 1725 until her death.
Euphrosina Heldina von Dieffenau
Euphrosina Heldina von Dieffenau, or" Heldin"( died 1636), was a Swedish courtier.
Originally from Germany, she became courtier to Catherine of Sweden, Countess Palatine of Kleeburg in 1590.
After the death of Catherine's mother, Maria of the Palatinate- Simmern, she became the lady- in- waiting, nurse and in practice foster mother of Catherine.
She were the confidant of Catherine and the two of them had a close relationship for the rest of their life, sometimes by letters, which are preserved.
She married a German officer in Swedish service, but remained in the service of Catherine also after Catherine's marriage as her Mistress of the Robes.
She was described as educated and seen as a role model for female nobles in this regard, could speak Latin and was given the task to practice reading and prayer with the heir to the throne, Gustav II Adolf of Sweden, and converse with foreign ambassadors.
Peter the Great
Peter the Great , Peter I  or Peter Alexeyevich  ruled the Tsardom of Russia and later the Russian Empire from until his death in 1725, jointly ruling before 1696 with his elder half-brother, Ivan V. Through a number of successful wars, he expanded the Tsardom into a much larger empire that became a major European power and also laid the groundwork for the Russian navy after capturing ports at Azov and the Baltic Sea.
He led a cultural revolution that replaced some of the traditionalist and medieval social and political systems with ones that were modern, scientific, Westernised and based on the Enlightenment.
Peter's reforms had a lasting impact on Russia, and many institutions of the Russian government trace their origins to his reign.
He is also known for founding and developing the city of Saint Petersburg, which remained the capital of Russia until 1917.
Grigory Orlov
Count Grigory Grigoryevich Orlov( Grigory Graf von Orlow)( 1734 – 1783) was the favorite of Catherine the Great of Russia who presumably fathered her son.
He led the coup which overthrew Catherine's husband Peter III of Russia, and installed Catherine as empress.
For some years, he was virtually co-ruler with her, but his repeated infidelities and the enmity of Catherine's other advisers led to his fall from power.
Agrippina Volkonskaia
Agrippina Petrovna Volkonskaia( d. 1732), was a Russian courtier.
She was the Ober- Hofmeisterin of Catherine I of Russia.
She was known for her participation in many political intrigues at court.
In 1727, she was the leading figure of a circle of prominent people in a conspiracy with the purpose of bringing about the downfall of Alexander Danilovich Menshikov, but she failed and was exiled.

Question: Where was the place of death of Catherine I Of Russia's husband?
Answer: Saint Petersburg