Question: When was the man who's name became synonymous with "Private Eye" magazine Colemanballs born?

Context paragraphs:
Long Boiler locomotive: The long boiler locomotive was the object of a patent by Robert Stephenson and the name became synonymous with the pattern.  Its defining feature is that the firebox is placed "behind" the rearmost driving axle.  This gives a long boiler barrel, with long fire-tubes.  There is thus a generous heating surface area, giving a boiler that is both powerful and efficient.

Peter Fairley: Peter Fairley (2 November 1930 in Kuala Lumpur, Malaysia – 4 August 1998) was a science journalist who was the Science Editor for Independent Television News and "TV Times" magazine the late sixties and early seventies.His name became synonymous with ITN's extensive live coverage of the Apollo moon landing missions.

David Coleman: David Robert Coleman OBE (26 April 1926 – 21 December 2013) was a British sports commentator and TV presenter who worked for the BBC for 46 years.  He covered eleven Summer Olympic Games from 1960 to 2000 and six football World Cups.

John Fuller (singer): John Fuller (26 June 1850 – 9 May 1923) was a New Zealand singer and theatrical company manager.  He was born in London, England on 26 June 1850.  Ben Fuller was his son.  The Fuller family name became synonymous with entertainment in New Zealand, especially vaudeville.

Little Egypt (dancer): Little Egypt was the stage name for three popular belly dancers.  They had so many imitators, the name became synonymous with belly dancers generally.

Kuruman Moffat Mission: The Kuruman Moffat Mission at Seodin outside Kuruman, South Africa, traces its establishment, by the London Missionary Society, to 1816, although the first settlement was not where the mission now stands but at ‘New Lattakoo’.  The move to the present site at Seodin was made in 1824.  Missionaries William Edwards and Robert Hamilton founded the mission but it was Robert Moffat, who joined them in 1820, whose name became synonymous with the Kuruman Mission.  He with his wife Mary remained there until 1870.  Having learnt Setswana, Moffat produced a complete translation of the Bible by 1857, in which year it was printed on the mission press at Kuruman - the first time that the Bible had been printed in its entirety anywhere in Africa, and the first time in a previously unwritten African language.

Ronald Tierney: Ronald Tierney was born December 12, 1944 in Indianapolis, Indiana.  After years as a writer, newspaper editor and communications director, Tierney began writing mysteries in the late 1980s.  "The Stone Veil" introduced semi-retired, Indianapolis-based private investigator Deets Shanahan.  The book was a finalist in St. Martin's Press "Best First Private Eye Novel" competition.  It was also nominated for the Private Eye Writers of America Shamus Award for "Best First Novel."  Tierney lives in San Francisco.  He is a member of the Authors Guild, Mystery Writers of America, and the Private Eye Writers of America.  Tierney's novels have been published by the UK's Severn House, St. Martin's Press and Dutton (Penguin Group).

Breville: Breville is an Australian manufacturer and marketer of small home appliances, founded in Melbourne in 1932.  They created the original sandwich toaster.  The product was a huge success upon its launch in Australia in 1974, selling 400,000 units in its first year and making the Breville brand a household name in Australia.  Soon after, the Breville toasted sandwich maker was launched in New Zealand and Great Britain where it met with similar success.  The name became synonymous with such devices - to the point where in some countries "Breville" has become the generic word for a sandwich toaster, and often the toasted sandwich itself, in much the same way that "The Hoover Company" is associated with the vacuum cleaner.

Colemanballs: Colemanballs is a term coined by "Private Eye" magazine to describe verbal gaffes perpetrated by sports commentators.  "Coleman" refers to the surname of the former BBC broadcaster David Coleman and the suffix "-balls", as in "to balls up", and has since spawned derivative terms in unrelated fields such as "Warballs" (spurious references to the September 11, 2001 attacks) and "Dianaballs" (sentimental references to Diana, Princess of Wales) and "Borisballs" (Boris Johnson).  Any other subject can be covered, as long as it is appropriately suffixed by "-balls".  The all-encompassing term "mediaballs" has since been used by "Private Eye" as its coverage of gaffes has expanded.

Fire arrow: Fire arrows were one of the earliest forms of weaponized gunpowder.  Not to be confused with earlier incendiary arrow projectiles, the fire arrow was a gunpowder weapon which receives its name from the translated Chinese term "huǒjiàn" (火箭), which literally means fire arrow.  In China a 'fire arrow' referred to a gunpowder projectile consisting of a bag of incendiary gunpowder attached to the shaft of an arrow from the 9th century onward.  Later on solid fuel rockets utilizing gunpowder were used to provide arrows with propulsive force and the term "fire arrow" became synonymous with rockets in the Chinese language.  In other languages such as Sanskrit 'fire arrow' ("agni astra") underwent a different semantic shift and became synonymous with 'cannon.'  Fire arrows are the predecessors of fire lances, the first firearm.

Supporting paragraphs: Colemanballs David Coleman
Answer: 26 April 1926