Question: How did Keyser Soze get his name?
About the article "The Usual Suspects", section "Origins".

Candidate passages:
During the editing phase Singer thought that they had completed the film two weeks early, but woke up one morning and realized that they needed that time to put together a sequence that convinced the audience that Dean Keaton was Söze — and then do the same for Verbal Kint because the film did not have "the punch that Chris had written so beautifully."
According to Ottman, he assembled the footage as a montage but it still did not work until he added an overlapping voiceover montage featuring key dialogue from several characters and have it relate to the images.
Early on, executives at Gramercy had problems pronouncing the name Keyser Söze and were worried that audiences would have the same problem.
The studio decided to promote the character's name.
Two weeks before the film debuted in theaters, "Who is Keyser Söze?"
posters appeared at bus stops, and TV spots told people how to say the character's name.
Despite these efforts, all the actors in the film consistently mispronounce his name as "Soze" instead of "Söze".
Singer wanted the music for the boat heist to resemble Pyotr Ilyich Tchaikovsky's Piano Concerto No.
1.
The ending's music was based on a k.d.
lang song. 
The setting, the semi-island of Mystery Mile, is based on Mersea Island, Essex, where Allingham spent some time in her youth, and set her first novel, "Blackkerchief Dick".
The book includes some hints about Campion's background.
We learn his real first name is "Rudolph", and last name begins with "K".
And we learn that that Campion looks enough like some Very Important Person to impersonate him on a trip to Asia.
These hints appear off and on throughout many other Campion novels.
Campion's affection for Biddy, and jealousy of Marlowe Lobbett, is quite apparent throughout, though never explicitly stated.
Campion's thoughts turn to Biddy again in "Look to the Lady".
The character of Simister bears striking similarity to Keyser Soze, a fictional character in the 1995 film "The Usual Suspects" — an all powerful crime lord, operating entirely through minions so that he himself is never exposed, thought by many to be a myth, to have existed too long to be a single man, and originating from the Middle East. 
Konrad Karkos, better known by his pseudonym, Keyza Soze or KEYZA, is a German record producer and composer from Berlin, Germany.
Since 2011 he lives in Sydney, Australia. 
Born in Fresno, California, Key was the son of Latvian immigrant Simon Keyser, who had changed his name from Katseff to Keyser, and then to "Key" during World War I.
Though his family thereafter went by Key, Theodore Keyser did not legally adopt the name until the 1950s.
Attending the University of California, Berkeley, Key became the art editor of the student newspaper, "The Daily Californian", and was associate editor of the campus humor magazine, the "California Pelican" and was a member of the Pi Lambda Phi fraternity.
After graduating from college in 1933, Key relocated to New York City, where he published cartoons and illustrations in a number of periodicals, including "Better Homes and Gardens", "Collier's", "The New Yorker", "Ladies' Home Journal", "Good Housekeeping", "McCall's", "Cosmopolitan", "TV Guide", "Mademoiselle", "Look" and "Judge."
Key also worked as associate editor of "Judge" in 1937. 
Keyser was born in Baltimore, Maryland on November 23, 1835, the son of Samuel Stouffer Keyser and Elizabeth Wyman Keyser.
He was educated at various private schools in Baltimore, and entered St. Timothy's Academy in Catonsville, Maryland in 1846.
He and his twin brother, Samuel, remained there until 1850, when their father's declining health and weakening financial situation made it necessary for the boys to leave school.
Samuel eventually moved to New York City to make his way in business there, while William stayed in Baltimore to manage his father's warehouses.
In 1857, William formed a partnership with his other brother, Irvine Keyser under the name "Keyser Brothers".
He was active in the firm, as well as the Abbott Iron Co. and the Baltimore Copper Company, throughout the 1860s.
On November 11, 1858, he married Mary (Mollie) Brent, daughter of the well-known Baltimore lawyer, Robert Brent.
They had three children who lived to adulthood: Robert Brent Keyser, Henry Irvine Keyser, and Mathilde Lawrence Keyser.