Question: Which co-writer of "Everything That Glitters (Is Not Gold)" was also one half of soft rock duo England Dan & John Ford Coley?

Context paragraphs:
Dan Seals discography: Dan Seals was an American country music artist.  Formerly one half of the pop duo England Dan & John Ford Coley, Seals split from the duo in the early 1980s and began a country music career.  As a solo artist, Seals released thirteen studio albums, six compilation albums, and thirty-seven singles.  Eleven of his singles reached Number One on the U.S. "Billboard" country singles charts, including nine consecutive Number Ones between 1985 and 1989.  Seals' best-selling album in the U.S. is 1987's "The Best", certified platinum by the RIAA.

We'll Never Have to Say Goodbye Again: "We'll Never Have to Say Goodbye Again" is a song by Jeffrey Comanor from the album "A Rumor in His Own Time", which debuted in September 1976.  Written by Comanor, the song describes a couple who spend a night together, one which the narrator wishes would "never end".  Both the song, which Epic Records released as a single, and album failed to chart.  Discovered four months later by Arista Records President Clive Davis, "We'll Never Have to Say Goodbye Again" was covered by soft rock duo Deardorff & Joseph for their eponymous debut album, released on Arista.  After Deardorff & Joseph disbanded, Marcia Day, who managed Maureen McGovern, became the manager of Deardorff, while Susan Joseph, who managed England Dan & John Ford Coley, became the manager of Joseph.  Both McGovern and England Dan & John Ford Coley released covers of "We'll Never Have to Say Goodbye Again" in February 1978; while McGovern's failed to chart, Dan & Coley's spent six weeks at number one on the "Billboard" US Easy Listening chart, reached number two on the "RPM" Canada Adult Contemporary chart, and went to numbers nine and eleven on the magazines' respective overall charts.

I Hear the Music: I Hear the Music is the third album by the pop rock duo England Dan & John Ford Coley.  "Tell Her Hello", "New Jersey", "Mud and Stone" and "Miss Me" were previously released on the album "England Dan & John Ford Coley".  The UK version of the album includes "Simone" as an extra track.

The Best of England Dan and John Ford Coley: Best of England Dan & John Ford Coley is a greatest hits album by the pop rock duo England Dan & John Ford Coley, released in 1979.

Stones (Dan Seals album): Stones is the debut solo album released by Dan Seals after he parted ways from the duo England Dan & John Ford Coley to pursue a career in country music.  It is his only album using the 'England Dan' moniker.  "Late at Night", "Stones (Dig a Little Deeper)", and "Love Like the Last Time" were released as singles but did not appear on the Hot Country Songs charts, although "Late at Night" did appear on the US Hot 100 chart, and peaked at #57 on that chart.  This album was finally released on CD in 2006 on the Wounded Bird label.

Dowdy Ferry Road: Dowdy Ferry Road is the fifth album by the pop rock duo England Dan & John Ford Coley.  The album's single "It's Sad to Belong" was a moderate pop hit and a #1 smash on the Adult Contemporary chart.  A second hit from the LP, "Gone Too Far," reached #23 on the U.S. "Billboard" Hot 100.  Being from Dallas, Texas area, England Dan and John Ford Coley named Dowdy Ferry Road after a street in the southeastern part of town.  Dowdy Ferry (Exit #476) connects with Interstate 20 in Texas.

England Dan &amp; John Ford Coley: England Dan & John Ford Coley were an American soft rock duo composed of Danny Wayland "England Dan" Seals and John Edward "John Ford" Coley, active throughout the 1970s.  Native Texans, the duo released 11 albums and nine singles in their career and are best known for their 1976 single, "I'd Really Love to See You Tonight", a No. 2 pop hit and No. 1 Adult Contemporary hit.  After they disbanded, Seals began performing as Dan Seals and launched a country music career through the 1980s which produced 11 No. 1 country hits.

Everything That Glitters (Is Not Gold): "Everything That Glitters (Is Not Gold)" is a song co-written and recorded by American country music artist Dan Seals.  It was released in March 1986 as the third single from the album "Won't Be Blue Anymore".  It peaked at number-one in both the United States and Canada.  The song was written by Seals and Bob McDill.

Dan Seals: Danny Wayland Seals (February 8, 1948 – March 25, 2009) was an American musician.  The younger brother of Seals & Crofts member Jim Seals, he first gained fame as "England Dan", one half of the soft rock duo England Dan & John Ford Coley, which charted nine pop singles between 1976 and 1980, including the No. 2 "Billboard" Hot 100 hit "I'd Really Love to See You Tonight".

John Ford Coley: John Ford Coley (born October 13, 1948) is an American singer, classically trained pianist, guitarist, actor, and author most known for his partnership in the musical duo England Dan & John Ford Coley.

Supporting paragraphs: Everything That Glitters (Is Not Gold) Dan Seals
Answer: Dan Seals