A squire was the shield bearer or armour bearer of a knight. Use of the term has evolved over time. In the Middle Ages, it referred to a trainee knight but it would come to mean a leader of an English village, often a justice of the peace or a Member of Parliament. Currently, in the United States, it refers to a Justice of the Peace or to a similar local dignitary. A squire was also known as the "Errand Runner" or "Servent" of the knight.

Squire is a shortened version of the word Esquire, from the Old French escuier (modern French écuyer), itself derived from the Late Latin scutarius ("shield bearer"), in medieval or Old English a scutifer. The Classical Latin equivalent was armiger, "arms bearer".

The most common definition of 'squire' is that to which refers to the medieval times. A squire would be a teenage boy, in his training to become a knight. A boy became a squire at the age of 14. This was the second stage to becoming a knight, after serving first as a page. As part of his development to that end, he served an existing knight as an attendant or shield carrier, doing simple but important tasks like saddling a horse or caring for the knight's weapons and armour. The squire would sometimes carry the knight's flag to battle with his master. But a squire did not stay a squire forever. A knight would take his squires (a knight could have multiple squires but a squire could only have one knight) into battle with him and that was a squire's chance to prove himself. If he proved his loyalty and skill in battle, he would have a dubbing, an official ceremony to become a knight. However, during the Middle Ages the rank of the squire came to be recognized in its own right, and once knighthood ceased to be conferred by any but the monarch, it was no longer to be assumed that a squire would in due course progress to be a knight. The connection between a squire and any particular knight also ceased to exist, as did any shield-carrying duties.

Christopher Russell Edward "Chris" Squire (born 4 March 1948), is an English musician, known as the bass guitarist and backing vocalist for the progressive rock group Yes. He is the only member of the group to appear on every album. He is widely regarded as the dominant bass guitarist among the early seventies British progressive rock bands, influencing peers and later generations of bassists with his incisive sound and elaborately contoured, melodic bass lines.

He was born in Kingsbury, a suburb of northwest London, in England. His father was a cab driver, and his mother a housewife. He was trained in the St Andrew's church choir as a young boy, beginning his musical career with a group called the "Selfs", along with his friend Andrew Jackman who played the keyboards. The band had their own venue at the St Andrew's church hall where on Friday nights they played at their own club, called appropriately, the "Graveyard Club". This was run by a group of local Grammar School boys which included Jonathan Angell, Bill Mesley, Chris Mann and Colin Mallett.

James Marshall "Jimi" Hendrix (born Johnny Allen Hendrix; November 27, 1942 – September 18, 1970) was an American musician and singer-songwriter. He is widely considered to be the greatest electric guitarist in music history, and one of the most influential musicians of his era despite mainstream exposure limited to just three years. After initial success in Europe with his group The Jimi Hendrix Experience, he achieved fame in the United States following his 1967 performance at the Monterey Pop Festival. Later, he headlined the iconic 1969 Woodstock Festival and the 1970 Isle of Wight Festival. He often favored raw overdriven amplifiers with high gain and treble and helped develop the previously undesirable technique of guitar amplifier feedback.

Hendrix helped to popularize use of the wah-wah pedal in mainstream rock, which he often used to deliver tonal exaggerations in his solos, particularly with high bends, complex guitar playing, and use of legato. As a record producer, he also broke new ground in using the recording studio as an extension of his musical ideas. He was one of the first to experiment with stereophonic phasing effects for rock recording.^{[citation needed]} He was influenced by blues artists such as B.B. King, Muddy Waters, Howlin' Wolf, Albert King and Elmore James,rhythm and blues and soul guitarists Curtis Mayfield and Steve Cropper, and the jazz guitarist Wes Montgomery. Hendrix began dressing and wearing a moustache like Little Richard when he performed and recorded in his band from March 1, 1964 through to the spring of 1965. In 1966, he stated, "I want to do with my guitar what Little Richard does with his voice".

Dr. Kurt D. Squire (born July 10, 1972 in Valparaiso, Indiana) is an associate professor at University of Wisconsin–Madison, and Director of the Games, Learning & Society Initiative, best known for his research into game design for education.

He writes a regular column for Computer Games magazine, and has been interviewed for many periodicals and media outlets, from PBS to wired.com.

Squire was born as the elder of two children to Walter "Dean" Squire, an accountant, and Susan Elizabeth Nelson a German language teacher. He attended Portage High School, graduating in 1990, then going on to study at the Western College Program at Miami University.

He received a B.Phil in Interdisciplinary Studies in 1994 from Miami University, and earned a Ph.D in 2004 from Indiana University. He taught at the Knoxville Montessori School and the McGuffey Foundation School between 1994–1996; later he became Research Manager of the Games-to-Teach Project at MIT.

Squire has written over 30 articles and book chapters, and is credited on various games such as Sid Meier's Civilization IV.

Stephen Richard Hackett (born 12 February 1950) is a British singer-songwriter and guitarist. He gained prominence as a member of the British progressive rock group Genesis, which he joined in 1970 and left in 1977 to pursue a solo career. Hackett contributed to six Genesis studio albums, three live albums and seven singles.

In 1986, Hackett co-founded the supergroup GTR with another progressive guitarist, Steve Howe of Yes and Asia. The group released a self-titled album that year, which peaked at #11 on the Billboard 200 in the United States and spawned the Top 20 single "When the Heart Rules the Mind". When Hackett left GTR in 1987, the group disbanded.

After leaving GTR, Hackett resumed his solo career and has released albums and toured on a regular basis since. His body of work has encompassed many styles, such as progressive rock, world music, and classical. His playing has influenced guitarists such as Eddie Van Halen, Alex Lifeson and Brian May. He was inducted into the Rock and Roll Hall of Fame as a member of Genesis in 2010.