Question: In what year was Cooper Manning's youngest brother born?

Context articles: Musharaff Moulamia Khan
Archie Manning
Mathias Barrett
Cooper Manning
Bless4
Raymond Kwok
Gioffre Borgia
Eli Manning
William H. T. Bush
MacRobert baronets

Musharaff Moulamia Khan was born in Baroda (India) on 6 September 1895 and died in Hague (Netherlands) on 30 November 1967.
 Не was the youngest brother of Hazrat Inayat Khan family, and shared his delight in music.
 While in his teens he had just come to Calcutta to study and be under the influence of his brother when Inayat was called away to America, and Musharaff was left alone.
 Within a year, however, he also journeyed to the west, where he joined Inayat and became one of 'The Royal Musicians of Hindustan.'
Elisha Archibald Manning III (born May 19, 1949) is a former American football quarterback who played professionally for 16 seasons in the National Football League (NFL).
 He played in the NFL for the New Orleans Saints from 1971 to 1982, and for short stints with the Houston Oilers and Minnesota Vikings.
 In college, he played for the Ole Miss Rebels football team at the University of Mississippi, and was later inducted into the College Football Hall of Fame.
 Manning is the father of Cooper Manning, former quarterback Peyton Manning, and Eli Manning, who is the current starting quarterback for the New York Giants.
 His sons Peyton and Eli have each won two Super Bowls.
Brother Mathias Barrett (1900–1990) was a Catholic Brother born in Ireland who founded a number of homes to help serve the needy and homeless throughout North America.
 He is also the founder of The Little Brothers of the Good Shepherd.
Cooper Manning (born March 6, 1974) is the host for the show "The Manning Hour" for Fox Sports.
 He is the oldest son of former professional football quarterback Archie Manning, and the older brother of former professional football quarterback Peyton Manning and current New York Giants quarterback Eli Manning.
bless4 is a Japanese vocal ensemble from the United States consisting of the four brothers and sisters of the Kawamitsu family.
 Youngest sister Akino has her own solo musical career, and youngest brother Aiki has also released a solo single (with eldest brother Akashi arranging) to accompany his book.
Raymond Kwok Ping Luen (, born in 1952 in Hong Kong with family roots in Zhongshan, Guangdong, China) is the chairman and managing director of Sun Hung Kai Properties, the largest property developer in Hong Kong.
 He is the chairman of SUNeVision Holdings Ltd. and SmarTone Telecommunications Holdings Limited.
 He is the youngest son of Kwok Tak Seng, and the youngest brother of Walter Kwok, and Thomas Kwok.
Gioffre Borgia (born 1481 or 1482; died 1516 or 1517), also known as Goffredo [Italian], or Jofré Borja [Valencian], was the youngest son of Pope Alexander VI and Vannozza dei Cattanei, and a member of the House of Borgia.
 He was the youngest brother of Cesare, Giovanni, and Lucrezia Borgia.
Elisha Nelson Manning (born January 3, 1981) is an American football quarterback for the New York Giants of the National Football League (NFL).
 He played college football at the University of Mississippi.
 He was drafted as the first overall pick in the 2004 NFL Draft by the San Diego Chargers and was immediately traded to the Giants who in return gave up a package, highlighted by fourth overall selection Philip Rivers.
 He is the son of former NFL quarterback Archie Manning and the younger brother of former NFL quarterback Peyton Manning.
William Henry Trotter "Bucky" Bush (born July 14, 1938) is an American businessman.
 He was the youngest son of Prescott Sheldon Bush and Dorothy Walker Bush, the youngest brother of former President George H. W. Bush, and the uncle of former President George W. Bush.
The MacRobert Baronetcy, of Douneside in the County of Aberdeen, was a title in the Baronetage of the United Kingdom.
 It was created on 5 April 1922 for Alexander MacRobert, a self-made millionaire.
 He was succeeded by his eldest son Alasdair in June of that year.
 Tragedy struck the family again when Alasdair was killed in a flying accident in 1938, and the title passed to his younger brother Roderic.
 In May 1941 Roderic was killed in action whilst flying a Hawker Hurricane fighter in the Middle East, and just over a month later on 30 June 1941, the title became extinct when the youngest brother Iain, was also killed in action whilst serving with the Royal Air Force.
 Their mother, Rachel, Lady MacRobert (1884–1954), gave £25,000 to purchase a Short Stirling bomber, the aircraft was named "MacRobert's Reply" in memory of her three sons.
 Lady MacRobert believed that her sons had lived up to the family motto "Virtutis Gloria Merces" – translated as "Honour is the Reward of Bravery".
 The MacRobert Award, which has been presented every year since 1969 by the Royal Academy of Engineering, is named in honour of Lady MacRobert.