Real names quiz

What are these various people's real (or original, or birth, or whatever) names?

1. Woody Allen (American filmmaker; 1935–)
   Don't know
   Gregory Richard Allen
   Allen Richard Kahn
   Allen Stewart Konigsberg
   Frank Allen Zerminski

2. Caligula (Roman emperor; 12–41)
   Don't know
   Gnaius Cæsar Britannicus
   Marcus Porcius Cato Augustus
   Caius Cæsar Augustus Germanicus
   Imperator Julius Divus Augustus

3. Truman Capote (American writer; 1924–1984)
   Don't know
   Gregory Frank Capote
   Strekfus Persons
   Truman Teller
   Robert Verdi

4. Lewis Carroll (British writer and mathematician; 1832–1898)
   Don't know
   Lewis Arthur Carroll
   Charles Lutwidge Dodgson
   George Noel Gordon
   Arthur Thomas Wildrow

5. Marlene Dietrich (German / American actress and singer; 1901–1992)
   Don't know
   Maria Magdalena Dietrich von Losch
   Marlene Fischer
   Esther Kahn
   Eva Wassermann

6. W. C. Fields (American actor / comic; 1879–1946)
   Don't know
   James Leslie Adams
   James Fenimore Cooper
   William Claude Dunkenfield
   James Jerry Hatter

7. Judy Garland (American actress and singer; 1922–1969)
   Don't know
   Dorothy Gale
   Judy Garland
   Frances Ethel Gumm
   Dorothy Parlin

8. Maksim Gorki (Russian / Soviet writer; 1868–1936)
   Don't know
   Boris Ivanovich Bakunin
   Maksim Petrovich Gorki
   Aleksandr Sergeievich Nazhdov
   Aleksei Maksimovich Peshkov

9. Gutenberg (German printer, inventor of mobile type; 1400–1468)
   Don't know
   Johannes Abraham
   Johannes Gensfleisch
   Johannes Lautbach
   Johannes Luther von Mainz

10. Adolf Hitler (German dictator; 1889–1945)
    Don't know
    Adolf Bachmann
    Adolf Münster
    Adolf Schickelgruber
    Adolf Johann von Schleserbach

11. Yukio Mishima (Japanese writer; 1925–1970)
    Don't know
    Kimitake Hiraoka
    Andô Hiroshige
    Yasunari Kawabata
    Minamoto Yokohama

12. Marilyn Monroe (American actress; 1926–1962)
    Don't know
    Eva Mary Gale
    Mary Jean Monroe
    Norma Jean Mortenson (later Baker)
    Eva Lise Roberts (later Smith)

13. George Orwell (British writer; 1903–1950)
    Don't know
    Eric Arthur Blair
    Charles Lutwidge Dodgson
    George Noel Gordon
    George Charles Orwell

14. Rembrandt (Flemish painter; 1606–1669)
    Don't know
    Peter Jan Duijsdael
    Jan Rembrandt
    Rembrandt Harmenszoon van Rijn
    Peter Salmeer

15. Verdi (Italian composer; 1813–1901)
    Don't know
    Ricardo Bandini
    Paulo Robusti
    Giuseppe Verdi
    Richard Wagner

16. Voltaire (French writer / philosopher; 1694–1778)
    Don't know
    François Marie Arouet
    Robert du Béry
    Charles de Secondat
    Jean Voltaire