Vladimir Vladimirovich Nabokov ( ; 2 July 1977), also known by the pen name Vladimir Sirin (), was a Russian-American novelist, poet, translator, and entomologist. Born in Imperial Russia in 1899, Nabokov wrote his first nine novels in Russian (1926–1938) while living in Berlin, where he met his wife. He achieved international acclaim and prominence after moving to the United States, where he began writing in English. Nabokov became an American citizen in 1945 and lived mostly on the East Coast before returning to Europe in 1961, where he settled in Montreux, Switzerland. From 1948 to 1959, Nabokov was a professor of Russian literature at Cornell University. Nabokov's 1955 novel Lolita ranked fourth on Modern Library's list of the 100 best 20th-century novels in 2007 and is considered one of the greatest 20th-century works of literature. Nabokov's Pale Fire, published in 1962, was ranked 53rd on the same list. His memoir, Speak, Memory, published in 1951, is considered among the greatest nonfiction works of the 20th century, placing eighth on Random House's ranking of 20th century works. Nabokov was a seven-time finalist for the National Book Award for Fiction. He also was an expert lepidopterist and composer of chess problems. Early life and education Russia Nabokov was born on 22 April 1899 (10 April 1899 Old Style) in Saint Petersburg to a wealthy and prominent family of the Russian nobility. His family traced its roots to the 14th-century Tatar prince Nabok Murza, who entered into the service of the Tsars, and from whom the family name is derived. His father was Vladimir Dmitrievich Nabokov (1870–1922), a liberal lawyer, statesman, and journalist, and his mother was the heiress Yelena Ivanovna née Rukavishnikova, the granddaughter of a millionaire gold-mine owner. His father was a leader of the pre-Revolutionary liberal Constitutional Democratic Party, and wrote numerous books and articles about criminal law and politics. His cousins included the composer Nicolas Nabokov. His paternal grandfather, Dmitry Nabokov (1827–1904), was Russia's Justice Minister during the reign of Alexander II. His paternal grandmother was the Baltic German Baroness Maria von Korff (1842–1926). Through his father's German ancestry, Nabokov was related to the composer Carl Heinrich Graun (1704–1759). Vladimir was the family's eldest and favorite child, with four younger siblings: Sergey (1900–45), Olga (1903–78), Elena (1906–2000), and Kirill (1912–64). Sergey was killed in a Nazi concentration camp in 1945 after publicly denouncing Hitler's regime. Writer Ayn Rand