Question: Who wrote about Jonathan Luther?

Context paragraphs:
Casey Jones: Jonathan Luther "John" "Casey" Jones (March 14, 1863 – April 30, 1900) from Jackson, Tennessee, was an American railroader who worked for the Illinois Central Railroad (IC).  He was killed on April 30, 1900 when his train collided with a stalled freight train near Vaughan, Mississippi.  His dramatic death while trying to stop his train and save the lives of his passengers made him a hero; he was immortalized in a popular ballad sung by his friend Wallace Saunders, an African-American engine wiper for the IC.

Arthur Sellings: Arthur Sellings was the pseudonym of Arthur Gordon Ley, (31 May 1921, Tunbridge Wells, Kent, England – 24 September 1968, Worthing, Sussex, England) an English scientist, book and art dealer, and science fiction author.  In addition to Sellings he also wrote under the pen names Ray Luther and Martin Luther.  He is best known for his well-crafted portraits of adaptability under stress, in stories noted for their humor, suspense and attention to plot and character.  His posthumous novel "Junk Day" is considered his best work.

Jonathan Jackson (activist): Jonathan Luther Jackson (born January 7, 1966) is an American business professor, entrepreneur and social justice advocate.  He is the national spokesman for the Rainbow/PUSH Coalition and a partner in a Chicago-based beer distributorship, River North Sales and Service, LLC.

Luther rose: The Luther seal or Luther rose is a widely recognized symbol for Lutheranism.  It was the seal that was designed for Martin Luther at the behest of John Frederick of Saxony in 1530, while Luther was staying at the Coburg Fortress during the Diet of Augsburg.  Lazarus Spengler, to whom Luther wrote his interpretation below, sent Luther a drawing of this seal.  Luther saw it as a compendium or expression of his theology and faith, which he used to authorize his correspondence.  Luther informed Philipp Melanchthon on September 15, 1530, that the Prince had personally visited him in the Coburg fortress and presented him with a signet ring, presumably displaying the seal.

Loci Communes: Loci Communes or Loci communes rerum theologicarum seu hypotyposes theologicae (Latin for "Common Places in Theology or Fundamental Doctrinal Themes") was a work by the Lutheran theologian Philipp Melanchthon published in 1521 (other, modified editions produced in the life of the author occurred in: 1535, 1543 and 1559).  Martin Luther said of it that "Next to Holy Scripture, there is no better book," and its existence is a common reason given for why Luther never wrote a systematic theology of his own.  In an overture to the English king, Henry VIII, to gain the English crown as converts to Lutheran protestantism, Philipp Melanchthon provided a dedication to the king in one of his printed editions.

Mit Fried und Freud ich fahr dahin: "Mit Fried und Freud ich fahr dahin " (In peace and joy I now depart) is a hymn by Martin Luther, a paraphrase in German of the Nunc dimittis , the canticle of Simeon.  Luther wrote the text and melody in 1524 and it was first published in the same year.  Originally a song for Purification, it has been used for funerals.  Luther included it in 1542 in "Christliche Geseng ... zum Begrebniss " (Christian chants ... for funeral).

Martin Luther, Heretic (1983 film): Martin Luther, Heretic is a 1983 film made to commemorate the 500th anniversary of the birth of Martin Luther.  It was released on November 8, 1983 in the United Kingdom, two days before the 500th jubilee on November 10.  It starred Jonathan Pryce as Martin Luther.  Maurice Denham reprised his role of Johann von Staupitz that he played in the 1973 American Film Theater film "Luther".  The time frame of the film is 1506-1522: the beginning of Luther's monastic vocation to his return from exile at the Wartburg in 1522.  A medieval dramatic troupe's performances of mystery plays provide the unifying motif for a parallel telling of the story of the film.  When Luther's carriage en route from the Wartburg to Wittenberg it is shown passing an actor wearing a devil's mask.  When this scene is revisited at the end of the film, the actor slips this mask off his face.

Freeman H. Hubbard: Freeman H. Hubbard (21 April 1894 – August 1981) was an American writer known for his articles and books about railroads.  He was editor of the Railroad Man's Magazine for 12 years.  He wrote widely about railroad history, legend and lore, including famous personalities such as Casey Jones, John Henry, Jesse James and Kate Shelley.  He was Secretary of the American Association of Cartoonists and Caricaturists.  He was born and died in New York City.

Eyn geystlich Gesangk Buchleyn: Eyn geystlich Gesangk Buchleyn (A sacred song booklet), sometimes called First Wittenberg Hymnal and "Chorgesangbuch " (Choir hymnal), was the first German hymnal for choir, published in Wittenberg in 1524 by Johann Walter who collaborated with Martin Luther.  It contains 32 sacred songs, including 24 by Luther, in settings by Walter for three to five parts with the melody in the tenor.  Luther wrote a preface for the part books.  The collection has been called the root of all Protestant song music.

Lutherhaus: The Lutherhaus is a writer's house museum in Lutherstadt Wittenberg, Germany.  Originally built 1504 as part of the University of Wittenberg, the building was the home of Martin Luther for most of his adult life and a significant location in the history of the Protestant Reformation.  Luther was living here when he wrote his "95 Theses".

Supporting paragraphs: Freeman H. Hubbard Casey Jones
Answer: Freeman H. Hubbard