Question: Which singer is older, Jake Burns or Biff Byford? 
Context: Stiff Little Fingers are a punk rock band from Belfast, Northern Ireland.  They formed in 1977, at the height of the Troubles.  They started out as a schoolboy band called Highway Star (named after the Deep Purple song), doing rock covers, until they discovered punk.  They split up after six years and four albums, although they reformed five years later, in 1987.  Despite major personnel changes, they are still touring and recording.  In 2014 the band released their tenth studio album and a world tour followed its release.  Jake Burns, their lead singer, is the only member to have been with the band during all its incarnations, but in March 2006, original bass guitarist Ali McMordie rejoined them following the departure of The Jam bass player Bruce Foxton after fifteen years. Into the Labyrinth is the eighteenth studio album by British heavy metal band Saxon, which was released on 9 January 2009.  The album was made in between Saxon tours in 2008 and written by the band in England and at Biff Byford's house in France.  The first single "Live to Rock" was released on 17 October 2008.  The album sold about 1,000 copies in the US in the week after its release. Celebrate - The Night of the Warlock is an EP by German female hard rock singer Doro Pesch, released in 2008 through AFM Records.  The EP preceded of a few months the album "Fear No Evil" and includes three versions of the song "Celebrate".  In the single version of the song the chorus is provided by a group of Doro fans, while the other two contain in the chorus the vocal performances of Saxon's frontman Biff Byford and of many female heavy metal singers.  The song itself is a new collaboration of Doro with the old Warlock producer Joey Balin and is meant to celebrate the 25th anniversary of Doro's career. John "Jake" Burns (born 21 February 1958, Belfast, Northern Ireland) is a singer and guitarist, and is best known as the frontman of Stiff Little Fingers. The Black Sheep Band is a Chicago-based punk rock supergroup that made a record for charity in 2011 called "A Chicago Punk Rock Collaboration For The Kids, Vol 1".  Members of the band include well-known musicians and punk pioneers such as Jake Burns of Stiff Little Fingers, Dan Vapid of Screeching Weasel, Eric Spicer of Naked Raygun, Mike Byrne and Pete Mittler both of The Methadones, James Toland of Micro Penis, Gina Knapik of Venom Lords, Dan Knapik of Not Rebecca, Herb Rosen from Rights Of The Accused and jazz saxophonist Scott Haynes. Jake Burns and the Big Wheel were a band put together by former Stiff Little Fingers vocalist Jake Burns in 1983.  The band consisted of Burns, Steve Grantley on drums, Sean Martin on bass guitar, and Pete Saunders on keyboards.  They split up in 1987 when Burns rejoined Stiff Little Fingers. Peter Rodney "Biff" Byford (born 15 January 1951) is an English singer best known as the lead singer of the heavy metal band Saxon. Rock 'n' Roll Gypsies is the second live album by the band Saxon, released in 1989 by Roadrunner Records.  It was the first album produced by Biff Byford and the first work with the bass guitarist Nibbs Carter.  In addition it was the drummer Nigel Glockler's return to the band.  In 2001, it was re-released with a different cover and two additional tracks, and with production credited to the whole band and not just to Byford. Henry Cluney (born 4 August 1957, Belfast, Northern Ireland) was a guitarist in Highway Star, the school band that became Stiff Little Fingers in 1977.  He remained with the group until lead singer Jake Burns disbanded them in 1983. "Princess of the Night" is a single by British heavy metal band Saxon, featured as the opening track and single from their 1981 album "Denim and Leather"; the song was written as a group production of all five members of the band at the time: Peter "Biff" Byford, Steve Dawson, Pete Gill, Graham Oliver, and Paul Quinn.  The lyrics of the song deal with narrator's affinity of a steam locomotive of the LMS Princess Royal Class.
Answer: Peter Rodney "Biff" Byford