In mathematics, Fesenko groups are certain subgroups of the wild automorphism groups of local fields of positive characteristic (i.e. the Nottingham group), studied by Ivan Fesenko ().
Ivan the Terrible (born 1911) is the nickname given to a notorious guard Ivan Marchenko, at the Treblinka extermination camp during the Holocaust.
 The moniker alluded to Ivan IV, also known as Ivan the Terrible, the infamous Tsar of Russia.
 "Ivan the Terrible" gained international recognition from the 1986 John Demjanjuk case.
 Already in 1944 a cruel guard named "Ivan", sharing the distinct duties and the extremely violent behavior with a guard named "Nicholas", is mentioned in survivor literature ("Rok w Treblince" by Jankiel Wiernik, translated into English as "A Year in Treblinka" in 1945); however, very little is known about Ivan Marchenko.
 John Demjanjuk was accused first of being Ivan the Terrible at the Treblinka concentration camp, but in 2011 he was accused of war crimes as a different guard named Ivan Demjanjuk who served at the Sobibor extermination camp.
Professor Wale Adebanwi, (born 1969), is a Nigerian - born first Black African Rhodes Professor at Oxford University
"Lab Rats", also known as "Lab Rats: Bionic Island" for its fourth season, is an American television sitcom that premiered on February 27, 2012, on Disney XD.
 It focuses on the life of teenager Leo Dooley, whose mother, Tasha, marries billionaire genius Donald Davenport.
 He meets Adam, Bree, and Chase, three bionic superhumans, with whom he develops an immediate friendship.
 It should be noted that the names of the Lab Rats imply that they were originally known as subjects A, B, C and D. Adam was born first, then Bree, then Chase, and finally Daniel.
Ivan Dmitri (or Dmitre) (1900 – 1968), born Levon West, was an artist from the U.S. State of North Dakota.
 Born in Centerville, South Dakota, his father was a Congregational minister who immigrated from Armenia.
 The family changed their name to West when Levon and his brothers did not want to enlist in the service during World War I under their Armenian last name, Assadoorian.
 The name West was chosen as it was the maiden name of Levon's mother.
 Levon West adopted the pen name of Ivan Dmitri to use for his color photography.
 His etchings and watercolors were always done under his original name, Levon West.
François Labourie (born 15 December 1960) is a French mathematician who has made various contributions to geometry, including pseudoholomorphic curves, Anosov diffeomorphism, and convex geometry.
 In a series of papers with Yves Benoist and Patrick Foulon, he solved a conjecture on Anosov's flows in compact contact manifolds.
Dmitri Victorovich Anosov (Russian: Дми́трий Ви́кторович Ано́сов ; November 30, 1936 – August 5, 2014) was a Soviet and Russian mathematician, known for his contributions to dynamical systems theory.
Augustine of Canterbury (born first third of the 6th century – died probably 26 May 604) was a Catholic Benedictine monk who became the first Archbishop of Canterbury in the year 597.
 He is considered the "Apostle to the English" and a founder of the Catholic Church in England.
In Greek mythology, Despoina, Despoena or Despoine, was the daughter of Demeter and Poseidon and sister of Arion.
 She was the goddess of mysteries of Arcadian cults worshipped under the title "Despoina", "the mistress" alongside her mother Demeter, one of the goddesses of the Eleusinian mysteries.
 Her real name could not be revealed to anyone except those initiated to her mysteries.
 Pausanias spoke of Demeter as having two daughters; Kore being born first, then later Despoina.
 With Zeus being the father of Kore, and Poseidon as the father of Despoina.
 Pausanias made it clear that Kore is Persephone, though he wouldn't reveal Despoina's proper name.
Ivan Fesenko (Russian: Иван Борисович Фесенко ; born 1962) is a mathematician working in number theory and other areas of modern mathematics.

Question: Which mathematician was born first,  Ivan Fesenko or Dmitri Anosov?
Answer: Dmitri Victorovich Anosov