Question: What year was the murderer of the Princes in the Tower born?

Context articles: James Tyrrell
Thomas David Lukas Olsen
Allan Grimson
Princes in the Tower
Hadden Clark
Lizzie Lloyd King
Gareth Evans (rugby player)
Henri Young
Donna Hylton
Svein Scharffenberg

Sir James Tyrrell (c. 1455 – 6 May 1502) was an English knight, a trusted servant of King Richard III of England.
 He is known for allegedly confessing to the murders of the Princes in the Tower under Richard's orders.
 William Shakespeare portrays Tyrrell as the man who organises the princes' murder in "Richard III".
Thomas David Lukas Olsen, formerly known as Magnus Gäfgen (born 11 April 1975 in Frankfurt am Main) is a German child murderer.
 In 2002, he was arrested for the murder of 11-year-old Jakob von Metzler, the son of a well-known Frankfurt banker (see Metzler Bank).
 The following year, Gäfgen was convicted and sentenced to life imprisonment.
Allan Grimson (born 1958) is a convicted British murderer who is responsible for murdering at least two men and is suspected of killing others, possibly up to another 20 undiscovered victims.
 The judge, who sentenced him to a minimum term of 22 years at his trial, said that Grimson was a serial killer by nature, but not by number.
 Because his two victims were killed on the same date just a year apart (12 December), detectives believe there may be more victims out there as yet unidentified.
"The Princes in the Tower" is an expression frequently used to refer to Edward V, King of England and Richard of Shrewsbury, Duke of York.
 The two brothers were the only sons of Edward IV of England and Elizabeth Woodville surviving at the time of their father's death in 1483.
 When they were 12 and 9 years old, respectively, they were lodged in the Tower of London by the man appointed to look after them, their uncle, the Lord Protector: Richard, Duke of Gloucester.
 This was supposedly in preparation for Edward's forthcoming coronation as king.
 However, Richard took the throne for himself and the boys disappeared.
Hadden Irving Clark (born July 31, 1952) is an American murderer and suspected serial killer, currently serving two 30-year sentences at Western Correctional Institution in Maryland for the murders of 6-year-old Michelle Dorr in 1986 and 23-year-old Laura Houghteling in 1992.
He was also given a 10-year sentence for robbery.
 He is the second of four children, and was born and raised in Troy, New York.
Elizabeth Lloyd King (born 1847) was the alleged murderer of Charles Goodrich, whom she is said to have shot three times in the head on 20 March 1873 in Brooklyn, New York, United States.
 The murder was headline news in the city, until her capture more than three months after the event.
 Her inquest drew large crowds, and prisoner church sermons drew requests for attendance from the general public, some of whom were granted entry.
 After a year in jail, a psychological assessment deemed that she was unfit to stand trial, and she was committed to a life sentence at the State Lunatic Hospital at Auburn.
Gareth Lloyd Evans (born 2 November 1952 in Newport) is a former Wales international rugby union player.
 He played club rugby for Newport RFC as either or a wing or a centre.
 He made his debut for Wales in February 1977 as a replacement for Gerald Davies against France at the Parc des Princes.
 Later that year he was selected for the 1977 British Lions tour to New Zealand and played on the wing in the last three internationals against the All Blacks.
 He played two further games for Wales, against France and Australia in 1978.
Henri Theodore Young (born June 20, 1911 – missing since 1972) was a convicted bank robber and murderer who, while serving one of a series of prison terms, attempted a 1939 escape from Alcatraz Federal Penitentiary with four other inmates.
 Two escapees were shot, and one died of his wounds; all surviving were quickly recaptured.
 Two at least, Young and Rufus McCain, received sentences of solitary confinement, and served them at Alcatraz for a period of a three year (until autumn of 1942).
 A little over three year after his reentering the Alcatraz general prison population (in December 1942), Young murdered fellow escapee McCain; no apparent motive was ever disclosed.
 Young's subsequent trial featured a spirited, creative defense that put Alcatraz and the penal system on trial, leading to questions about how the prison was run.
 Young was transferred from Alcatraz to the Medical Center for Federal Prisoners, Springfield, Missouri, in 1948, and then to Washington State Penitentiary at Walla Walla on completion of his federal sentence, to begin a life sentence for the 1933 murder conviction.
Donna Hylton (born October 29, 1964) is a Jamaican-American convicted murderer and rights activist.
 Hylton served a 27 year prison sentence in Bedford Hills Correctional Facility for Women (Department Identification Number 86G0206) for her role in the kidnapping, torture, and murder of Thomas Vigliarolo, a Long Island businessman.
Svein Scharffenberg (born 21 June 1939) is a Norwegian actor and stage director.
 He was born in Oslo.
 He started his acting career at Den Nationale Scene in the season 1967–1968, and was assigned with Nationaltheatret from the next season.
 He joined Hålogaland Teater from its establishment in 1971.
 He staged "Sukkerbrød med kaviar", written by Leonard Melfi, for Fjernsynsteatret in 1975.
 He staged the first production at Torshovteatret, Dahl's play "Lever du'a Karlsen?"
, in 1977.
 Among his film roles is the murderer in "Bortreist på ubestemt tid", and he played leading roles in "Angst" from 1976 and "Arme, syndige menneske" from 1980.
 He received the Amanda Award in 2001, for best actor in Norwegian film last year (in the film "Når nettene blir lange").