Question: Who is the lead guitarist and co-founder with Chris martin of the band formerly known as Pectoralz, which was renamed Coldplay?

Context paragraphs:
Jonny Buckland: Jonathan Mark Buckland (born 11 September 1977) is an English musician, multi-instrumentalist and singer.  He is the lead guitarist and co-founder of the rock band Coldplay.

Coldplay: Coldplay are a British rock band formed in 1996 by lead vocalist and keyboardist Chris Martin and lead guitarist Jonny Buckland at University College London (UCL).  After they formed under the name Pectoralz, Guy Berryman joined the group as bassist and they changed their name to Starfish.  Will Champion joined as drummer and backing vocalist, completing the lineup.  Creative director Phil Harvey is often referred to as the fifth member by the band.  The band renamed themselves "Coldplay" in 1998, before recording and releasing three EPs: "Safety" in 1998 and "Brothers & Sisters" and "The Blue Room" in 1999.  "The Blue Room" was their first release on a major label, after signing to Parlophone.

Little Memphis Blues Orchestra: Little Memphis Blues Orchestra (also known as L.M.B.O. or LiMBO) is the band formerly known as the Taylor Hicks Band.  Taylor Hicks assembled the band about two years before he won "American Idol" in 2006.  The band was initially formed in Alabama, but has since based themselves throughout the Southern United States, and later (after "American Idol"), to nationwide.  The band features Brian Less on keyboard/piano/vocals, Sam Gunderson on lead guitar/vocals, Mitch Jones on bass guitar, Zippy Dietrich on drums/vocals and Jeff Lopez on Saxophone/Backup Vocals.

Homecoming (Kanye West song): "Homecoming" is a song by American hip-hop recording artist and record producer Kanye West.  It was included as the twelfth song on the track-listing of his third studio album "Graduation" (2007).  The track was produced by West with Warryn Campbell and features a guest appearance from Chris Martin, lead vocalist of the English alternative rock band Coldplay, who sings the song's chorus.  West met Chris Martin by chance at the famed Abbey Road Studios in London, England on February 14, 2006.  Afterwards, the two artists held an impromptu jam session and recorded the track.  "Homecoming" is actually a reworking of a track known as "Home (Windy)" that originated from a demo tape dating back to the year 2001.  The early recordings of "Home (Windy)" exhibit West's once trademark soulful vocal sample production style.  Additionally, the lyrics of the song's chorus are different than that of Martin's and were originally sung by singer John Legend, who was known at the time as John Stephens.  West wrote "Homecoming" as a tribute dedicated to his hometown of Chicago, Illinois.  His conceptual lyrics feature an extended metaphor where he uses a love interest to speak on his relationship with the city.

Shiver (Coldplay song): "Shiver" is a song by British rock band Coldplay.  British record producer Ken Nelson and Coldplay produced the track for their debut album "Parachutes".  Lead singer Chris Martin admitted that "Shiver" was written for a specific woman, from whom the media has generated several speculations.  The song contains influences attributed to American singer-songwriter Jeff Buckley, whom Coldplay's early influences were drawn from.

Slideling: Slideling is the third solo album by British singer-songwriter Ian McCulloch and was released in 2003.  The album features guest appearances by Coldplay singer Chris Martin, who provides backing vocals and piano on "Sliding" as well as piano on "Arthur"; Coldplay lead guitarist Jonny Buckland, who plays guitar on "Sliding" and "Arthur"; and actor John Simm, who plays guitar on "Sliding".

Chris Martin: Christopher Anthony John Martin (born 2 March 1977) is an English singer, songwriter, musician, record producer and philanthropist.  He is best known as the lead singer and co-founder of the British rock band Coldplay.  Born in Whitestone, near Exeter in Devon, Martin went to University College London where he formed a rock band with Jonny Buckland in 1996 called Pectoralz, which was eventually renamed Coldplay in 1998.

Gravity (Embrace song): "Gravity" is the 2004 lead single from "Out of Nothing", the fourth album by English rock band Embrace.  Written by Coldplay, the song was first performed live by that group in 2002.  Ultimately, Coldplay frontman Chris Martin gave the song to Embrace, although Coldplay released their own version in 2005, as a B-side to the single "Talk".

All Good Things (Come to an End): "All Good Things (Come to an End)" is a song by Canadian-Portuguese singer Nelly Furtado from her third studio album "Loose" (2006).  It was written by Furtado, Tim "Timbaland" Mosley, Chris Martin, and Nate "Danja" Hills.  The song was released as the album's third European single in November 2006.  It was released as the fourth single in the United States and Australia.  The single featured Chris Martin, frontman of the band Coldplay, harmonizing throughout the song.  The original version had him say a few words at the beginning, and sing the chorus behind Furtado.  Critically, "All Good Things (Come to an End)" was praised for having diversity in comparison to other songs on "Loose", but at the same time criticized for its mellowness.  Commercially, the song did well on the music charts, reaching number-one in more than fifteen countries including Austria, Czech Republic, Denmark, Germany and the Netherlands.

Supernatural Fairy Tales: Supernatural Fairy Tales is the only album by Art, a renamed band formerly known as The V.I.P.'s.  The album contains mostly band compositions plus a cover of The Young Rascals' "Come on Up" and Buffalo Springfield's "For What It's Worth".  Unusual for 1967, the album was issued in mono only.

Supporting paragraphs: Chris Martin Jonny Buckland
Answer: Jonathan Mark Buckland