This band, which later changed its name to Maundy Quintet, included Don Felder and Stephen Stills, and later Bernie Leadon, who was an original member of the Eagles.

Guillory's first performances began in 1965 while attending St. Johns River State College in Palatka where he became a member of The Illusions, eventually becoming lead guitarist.

After active resistance to the Vietnam War, Guillory left the US in November 1970, acquired a Martin D-35 and lived throughout Europe.

This was quite rare at the time with solo singer/guitarists on the folk circuit and certainly helped him to communicate his renowned performing skills to his audiences without having to fear the usual technical blips that can occur using a venue's house PA.[citation needed] He always concentrated on live solo performances (which put him up-close with more intimate small audiences) and sharing his understanding of music; touring, creating his own online guitar school.

He performed frequently as a guest artist for recordings and films with, among many others, Al Stewart, Donovan, Mick Jagger, Elkie Brooks, Michael Marra, Peter Sarstedt, Buggles, Barbara Dickson, and Nick Heyward.

[7] He also wrote The Guitar Hand Book with friend, Ralph Denyer,[2] which became the foundation for the BBC series Rockschool.

His virtuoso guitar playing made him popular with audiences and ensured a steady stream of work as a performer and teacher.

[citation needed] His final album, The Days of '49, recorded on tour during late 1999 and released in early 2000, included a number of solo compositions as well as arrangements of some folk standards.

His father, Easton Joseph Guillory (1918-1965), was an American sailor (a U.S. Navy chief damage controlman) who later studied industrial and mechanical engineering at the University of Florida and worked as an industrial engineer for the Hudson Pulp and Paper Corporation at Palatka, Florida;[8] his mother, Victoria (died 2011), daughter of Vitali Ojalvo, was a professional musician and later a Spanish/ English federal court interpreter.

[1][9] His maternal grandparents were Jewish emigrants from Turkey, who met and married by arrangement only 10 days before they sailed for Cuba.

Isaac Guillory was produced by Ian Samwell, Jeff Dexter, Jim Fairs, and was released in 1974 by Atlantic Records SD 7307, 1974.