Question: Which band formed earlier The Jesus and Mary Chain or The Owl Service?

Context paragraphs:
Upside Down (The Jesus and Mary Chain song): "Upside Down" is the first single from the Scottish alternative rock band The Jesus and Mary Chain.  The song was written by William Reid and Jim Reid, and was produced by The Jesus and Mary Chain.  The b-side is a cover of a Syd Barrett song and was produced by Joe Foster.

Automatic (The Jesus and Mary Chain album): Automatic is the third album by Scottish alternative rock band The Jesus and Mary Chain.  The group on this record is basically the core duo of brothers William and Jim Reid with a drum machine providing percussion and even a synthesizer filling in on bass guitar.  The only other credited musician was Richard Thomas who joined the touring version of The Jesus and Mary Chain as a drummer.  Thomas drummed on "Gimme Hell" and was a former member of Dif Juz.  He also made appearances on Cocteau Twins' 1986 Victorialand LP and This Mortal Coil's 1986 Filigree & Shadow.

Never Understand: "Never Understand" is the first single from the Scottish alternative rock band The Jesus and Mary Chain's debut album "Psychocandy".  It was the band's first release on Blanco y Negro Records and was released through them in February 1985.  The song was written by William Reid and Jim Reid, and was produced by The Jesus and Mary Chain.  It is considered influential for its use of guitar feedback.

Ecstasy (My Bloody Valentine album): Ecstasy is the second mini album by the alternative rock band My Bloody Valentine, released on 23 November 1987 on Lazy Records.  Released in a limited edition of 3,000 copies, it was the band's final release for Lazy Records and second to feature vocalist and guitarist Bilinda Butcher, who was recruited in April 1987 following the departure of original My Bloody Valentine vocalist David Conway.  "Ecstasy" followed the noise pop and twee pop standards of My Bloody Valentine's earlier releases for the label, drawing influence from various artists including The Jesus and Mary Chain, Love and The Byrds, and the album distanced the band further from their earlier post-punk and gothic rock sound.

The Jesus and Mary Chain: The Jesus and Mary Chain are a Scottish alternative rock band formed in East Kilbride in 1983.  The band revolves around the songwriting partnership of brothers Jim and William Reid.  After signing to independent label Creation Records, they released their first single "Upside Down" in 1984.  Their debut album "Psychocandy" was released to critical acclaim in 1985 on major label WEA.  The band went on to release five more studio albums before disbanding in 1999.  They reunited in 2007.

Rollercoaster Tour: The Rollercoaster Tour was a 1992 co-headlining concert tour by the English Britpop band Blur, the American indie rock band Dinosaur Jr., the Irish alternative rock band My Bloody Valentine and the Scottish noise pop band the Jesus and Mary Chain.  A one-leg 11-date tour of the United Kingdom, the tour was in support of all four bands' current releases: Blur's debut album "Leisure" (1991), Dinosaur Jr.' s fourth album "Green Mind" (1991), My Bloody Valentine's second album "Loveless" (1991) and The Jesus and Mary Chain's fourth album "Honey's Dead" (1992).

The Owl Service (band): The Owl Service was an English alternative folk music collective formed in 2006 by multi-instrumentalist Steven Collins (who led the band for its entire 10 year duration), named after the 1967 novel by Alan Garner.

Upside Down: The Best of The Jesus and Mary Chain: Upside Down: The Best of The Jesus and Mary Chain is a greatest hits album by Scottish alternative rock band, The Jesus and Mary Chain.  It was released on 27 September 2010 via Music Club Deluxe.

The Buck Pets: The Buck Pets were an American alternative rock band formed in the late 1980s in Dallas, Texas.  They were clearly influenced by earlier bands such as The Replacements, Buzzcocks and The Jesus and Mary Chain but incorporated better production values and more overt nods to classic rock than their college rock/punk predecessors.

Freeheat: Freeheat are a British Indie rock band formed by Jim Reid and Ben Lurie of The Jesus and Mary Chain and Romi Mori and Nick Sanderson of The Gun Club.

Supporting paragraphs: The Owl Service (band) The Jesus and Mary Chain
Answer: The Jesus and Mary Chain