Question: Who is the British counterpart of the man who wrote "Semper Fidelis" in 1888?

full_context: Document 1: Semper fidelis: Semper fidelis is a Latin phrase that means "always faithful" or "always loyal". It is the motto of the United States Marine Corps usually shortened to Semper fi. It is also in use as a motto for towns, families, schools, and military units.
Document 2: You're a Grand Old Flag: "You're a Grand Old Flag" is an American patriotic march. The song, a spirited march written by George M. Cohan, is a tribute to the American flag. In addition to obvious references to the flag, it incorporates snippets of other popular songs, including one of his own. Cohan wrote it in 1906 for "George Washington, Jr.", his stage musical.
Document 3: Semper Fidelis (album): Semper Fidelis (Latin for "forever faithful") is the fifth full-length release of the black metal band Nargaroth. It marks Wagner's departure from the Black Metal scene and from his "Kanwulf" persona, and the embrace of "Ash", which has been his nickname since childhood.
Document 4: The Royal Welch Fusiliers (march): "The Royal Welch Fusiliers" is a march composed by John Philip Sousa in 1929, and then rewritten in 1930. It is the only march written by Sousa for a British Army regiment.
Document 5: John Philip Sousa: John Philip Sousa ( ; ; November 6, 1854 – March 6, 1932) was an American composer and conductor of the late Romantic era, known primarily for American military and patriotic marches. Because of his mastery of march composition, he is known as "The March King", or the "American March King" due to his British counterpart Kenneth J. Alford also being known by the former nickname. Among his best-known marches are "The Stars and Stripes Forever" (National March of the United States of America), "Semper Fidelis" (Official March of the United States Marine Corps), "The Liberty Bell" (used as the theme for Monty Python's Flying Circus), "The Thunderer" and "The Washington Post".
Document 6: Leroy Anderson: Leroy Anderson ( ~ ); (June 29, 1908 – May 18, 1975) was an American composer of short, light concert pieces, many of which were introduced by the Boston Pops Orchestra under the direction of Arthur Fiedler. John Williams described him as "one of the great American masters of light orchestral music."
Document 7: Semper Fidelis (Jericho): "Semper Fidelis" is the fifteenth episode of season one of the CBS drama "Jericho". The episode's title, Latin for "always faithful", is the motto of the United States Marine Corps.
Document 8: Semper Gumby: Semper Gumby is an unofficial motto for the United States Marine Corps, United States Coast Guard, United States Public Health Service Commissioned Corps, Navy submariners, Navy Seabees, Army Unit Supply Specialists, and the Civil Air Patrol. It is a play on the official motto "Semper Fidelis", usually abbreviated "Semper Fi", which means ""Always Faithful"", and that of the US Coast Guard, "Semper Paratus", meaning ""Always Ready."" "Semper Gumby", referring to the animated clay character Gumby, means ""Always Flexible"". The real Latin phrase meaning ""always flexible"" is "semper flexibilis".
Document 9: High School Cadets: "High School Cadets" is a march written in 1890 by John Philip Sousa in honor of the cadet drill team of Washington High School in the District of Columbia. It is in regimental march form (I-AA-BB-CC-DD) and is a popular selection for school concert and marching bands, as well as for professional orchestras and bands. The march has been arranged for a wide variety of instruments and ensembles, and has been frequently recorded, including at least two recorded performances by Sousa's own band. The march's final strains were featured in the 1939 film "The Under-Pup".
Document 10: To Anacreon in Heaven: "The Anacreontic Song", also known by its incipit "To Anacreon in Heaven", was the official song of the Anacreontic Society, an 18th-century gentlemen's club of amateur musicians in London. Composed by John Stafford Smith, the tune was later used by several writers as a setting for their patriotic lyrics. These included two songs by Francis Scott Key, most famously his poem "Defence of Fort McHenry". The combination of Key's poem and Smith's composition became known as "The Star-Spangled Banner", which was adopted as the national anthem of the United States of America in 1931.
Document 11: Arthur Sullivan: Sir Arthur Seymour Sullivan MVO (13 May 1842 – 22 November 1900) was an English composer. He is best known for his series of 14 operatic collaborations with the dramatist W. S. Gilbert, including "H.M.S. Pinafore", "The Pirates of Penzance" and "The Mikado". His works include 23 operas, 13 major orchestral works, eight choral works and oratorios, two ballets, incidental music to several plays, and numerous hymns and other church pieces, songs, and piano and chamber pieces. The best known of his hymns and songs include "Onward Christian Soldiers" and "The Lost Chord".
Document 12: Scott Joplin: Scott Joplin ( ; 1867/68 or November 24, 1868– April 1, 1917) was an African-American composer and pianist. Joplin achieved fame for his ragtime compositions and was dubbed the "King of Ragtime". During his brief career, he wrote 44 original ragtime pieces, one ragtime ballet, and two operas. One of his first, and most popular pieces, the "Maple Leaf Rag", became ragtime's first and most influential hit, and has been recognized as the rag.
Document 13: Philip Phile: Philip Phile (German: Pfeil) (c.1734–1793) was a German-American composer and violinist. His year of birth is uncertain, but believed to be approximately 1734. His works include a lost Violin Concerto (1787), but he is best known for "The President's March", written and performed at the inauguration of President George Washington.
Document 14: Admiral Dewey March: "Admiral Dewey March" is patriotic war march written in 1898 with numerous composers. The march is dedicated to George Dewey, a U.S. Navy Admiral, and his actions during the Spanish–American War, specifically the Battle of Manila Bay in 1898.
Document 15: Semper Fidelis (march): "Semper Fidelis", written in 1888 by John Philip Sousa (The March King), is regarded as the official march of the United States Marine Corps. This piece was one of two composed in response to a request from United States President Chester Arthur for a new piece to be associated with the United States President. The words Semper Fidelis are Latin for "Always Faithful."
ground_truth: Kenneth J. Alford