Question: When does the English lexicographer and etymologist born who was with  Nicholas Radbourn in the Channel 4 programme "Countdown"?

Context articles: Jonathon Green
Richard Whiteley
Frank Horace Vizetelly
Richard Huloet
Patrick Hanks
Susie Dent
Nick Hewer
Countdown (game show)
Peter Levens
John Simpson (lexicographer)

Jonathon Green (born 20 April 1948 in Kidderminster, Worcestershire) is an English lexicographer of slang and writer on the history of alternative cultures.
 Jonathon Green is often referred to as the English-speaking world's leading lexicographer of slang, and has even been described as 'The most acclaimed British lexicographer since Johnson'.
John Richard Whiteley, OBE, DL (28 December 1943 – 26 June 2005) was an English presenter, and journalist, best known for his twenty-three years as host of the game show "Countdown".
 "Countdown" was the launch programme for Channel 4 at 4:45 pm on 2 November 1982, and Whiteley was the first person to be seen on the channel (not counting a programme montage).
 Despite his intelligence, Whiteley enjoyed projecting the image of an absent-minded eccentric.
 His trademarks were his jolly, avuncular manner, his fondness for puns, and his bold, sometimes garish wardrobe.
Frank Horace Vizetelly (2 April 1864 – 1938) was an English lexicographer, etymologist and editor.
Richard Huloet was a 16th-century English lexicographer.
 He was born at Wisbech, Cambridgeshire.
 He was a contemporary of Peter Levens, John Withals and John Veron.
Patrick Hanks (born 24 March 1940) is an English lexicographer, corpus linguist, and onomastician.
 He has edited dictionaries of general language, as well as dictionaries of personal names.
Susie Dent (born November 19, 1964) is an English lexicographer and etymologist.
 She has appeared in "Dictionary Corner" on the Channel 4 game show "Countdown" every year since 1992.
 She also appears on "8 Out of 10 Cats Does Countdown", which is a late night comedy version of the show presented by comedian Jimmy Carr.
Nicholas Radbourn "Nick" Hewer (born 17 February 1944) is an English television presenter and former public relations consultant.
 From 2005 to 2014, he appeared as Lord Sugar's adviser on the British television series "The Apprentice".
 Since January 2012, he has presented the Channel 4 programme "Countdown" with Rachel Riley and Susie Dent, having taken over from Jeff Stelling.
 He is the fifth presenter of "Countdown" and the longest-serving one since the death of the original host, Richard Whiteley, in 2005.
Countdown is a British game show involving word and number puzzles.
 It is produced by ITV Studios and broadcast on Channel 4.
 It is currently presented by Nick Hewer, assisted by Rachel Riley, with regular lexicographer Susie Dent.
 It was the first programme to be aired on Channel 4, and 77 series have been broadcast since its debut on 2 November 1982.
 With over 6,500 episodes, "Countdown" is one of the longest-running game shows in the world, along with the original French version, "Des chiffres et des lettres" (Numbers & Letters), which has been running on French television continuously since 1965.
 "Countdown" was initially recorded at The Leeds Studios for 27 years, before moving to Granada Studios in 2009, and then over to MediaCityUK in Salford Quays in 2013.
Peter Levens (1552-1587) was an English lexicographer.
 He was born in Yorkshire, and attended Magdalen College.
 He received his BA and MA from Oxford University.
John Simpson OBE (born 13 October 1953) is an English lexicographer and was Chief Editor of the "Oxford English Dictionary" ("OED") from 1993 to 2013.