Fyodor Alekseyevich Minin (Russian: Федор Алексеевич Минин) (ca. 1709 - after 1742) was a Russian Arctic explorer.

In 1730s, Minin participated in the Second Kamchatka expedition. In 1736, he joined the unit led by Dmitry Ovtsyn. In 1738, he was in charge of a group of explorers, that would chart the Arctic Ocean coastline east of the Yenisei river. In 1738-1740, Minin made an attempt to go around the Taimyr Peninsula from the north and reached 75°15'N. Together with Dmitry Sterlegov, he mapped this part of the Arctic Ocean coastline.

A cape at the Mammoth Peninsula, a peninsula, the Minina Skerries in the Kara Sea, a gulf, and a mountain on the shores of the Taimyr Peninsula bear Minin's name.

Ivan IV Vasilyevich (Russian:  Ива́н Четвёртый, Васи́льевич​ (help·info), Ivan Chetvyorty, Vasilyevich; 25 August 1530 – 28 March [O.S. 18 March] 1584), known in English as Ivan the Terrible (Russian:  Ива́н Гро́зный​ (help·info), Ivan Grozny; lit. Fearsome), was Grand Prince of Moscow from 1533 until his death. His long reign saw the conquest of the Khanates of Kazan, Astrakhan, and Siberia, transforming Russia into a multiethnic and multiconfessional state spanning almost one billion acres, approximately 4,046,856 km² (1,562,500 sq mi). Ivan managed countless changes in the progression from a medieval state to an empire and emerging regional power, and became the first ruler to be crowned as Tsar of all Russia.

Historic sources present disparate accounts of Ivan's complex personality: he was described as intelligent and devout, yet given to rages and prone to episodic outbreaks of mental illness. On one such outburst Tsar beat and unpremeditatedly killed his groomed and chosen heir Ivan Ivanovich. This led Tsardom to be passed to Tsar's younger son: the weak and intellectually disabledFeodor I of Russia. Ivan's legacy is complex: he was an able diplomat, a patron of arts and trade, founder of the Russia's first Print Yard, but he is also remembered for his paranoiac suspiciousness and cruel persecution of nobility.