Question: Who wrote the book series that includes a character known as Queen Susan the Gentle?

Context articles: K. A. Applegate
Susan of Albania
J. C. Leyendecker
Sana Bukas pa ang Kahapon
Draw Your Own Toons
Simon Templar
Reaper (Marvel Comics)
C. S. Lewis
Cair Paravel
Susan Pevensie

Katherine Alice Applegate (born October 9, 1956 in Ann Arbor, Michigan) is an American young adult and children's fiction writer, best known as the author of the "Animorphs", "Remnants", "Everworld", and other book series.
 She won the 2013 Newbery Medal for her 2012 children's novel "The One and Only Ivan".
 Applegate's most popular books are science fiction, fantasy, and adventure novels.
 She won the Best New Children's Book Series Award in 1997 in "Publishers Weekly".
 Her book "Home of the Brave" has won two awards.
 She also wrote a chapter book series in 2008-9 called "Roscoe Riley Rules".
Susan, Crown Princess of Albania ("née" Cullen-Ward, formerly Williams; 28 January 1941 – 17 July 2004), also known as Susan Barbara Zogu and Queen Susan of the Albanians (Albanian: "Suzana Zog, Mbretëreshë e Shqiptarëve"), was the Australian-born wife of Leka, Crown Prince of Albania.
Joseph Christian Leyendecker (March 23, 1874 – July 25, 1951) was one of the preeminent American illustrators of the early 20th century.
 He is best known for his poster, book and advertising illustrations, the trade character known as The Arrow Collar Man, and his numerous covers for "The Saturday Evening Post".
 Between 1896 and 1950, Leyendecker painted more than 400 magazine covers.
 During the Golden Age of American Illustration, for "The Saturday Evening Post" alone, J. C. Leyendecker produced 322 covers, as well as many advertisement illustrations for its interior pages.
 No other artist, until the arrival of Norman Rockwell two decades later, was so solidly identified with one publication.
 Leyendecker "virtually invented the whole idea of modern magazine design."
Sana Bukas pa ang Kahapon (Lit: "I Wish Yesterday Were Still Tomorrow" / English: "Tomorrow Belongs to Me") is a 2014 Philippine melodrama romantic business crime mystery suspense thriller television series directed by Jerome C. Pobocan and Trina N. Dayrit, the series stars Movie Queen, Bea Alonzo, Paulo Avelino, Maricar Reyes, and Albert Martinez, together with an ensemble cast consisting of the original Movie Queen Susan Roces, Anita Linda, Eddie Garcia, Tonton Gutierrez, Dina Bonnevie, and Michelle Vito.
 The drama was named after the 1983 film of the same name, courtesy of Viva Films.
 The series was aired on ABS-CBN's "Primetime Bida" evening block and worldwide on The Filipino Channel on June 16, 2014, replacing "The Legal Wife".
 The series concluded its 17-week run on October 10, 2014, with a total of 84 episodes.
 It was replaced by "Two Wives" on its timeslot on October 13, 2014.
Draw Your Own Toons is a British television program that was produced by Buena Vista and Meridian Broadcasting for CITV.
 Four series were aired between 1998 and 2001.
 Each series was broadcast over the space of a week in either October or December.
 The program was presented by children's television presenter Fearne Cotton (series 1-4), Jim Jinkins (series 1-2) and Howy Parkins (series 4).
 The character known as Elvira in series 1 half.
Simon Templar is a fictional character known as The Saint.
 He is featured in a long-running series of books by Leslie Charteris published between 1928 and 1963.
 After that date, other authors collaborated with Charteris on books until 1983; two additional works produced without Charteris's participation were published in 1997.
 The character has also been portrayed in motion pictures, radio dramas, comic strips, comic books and three television series.
Reaper is the name of several fictional characters appearing in American comic books published by Marvel Comics.
 The character known most notably as the Reaper whose real name is Pantu Hurageb, a mutant in the "X-Force" comic book series.
 He has been a villain in the main Marvel Universe but a hero in the Ultraverse.
Clive Staples Lewis (29 November 1898 – 22 November 1963) was a British novelist, poet, academic, medievalist, literary critic, essayist, lay theologian, broadcaster, lecturer, and Christian apologist.
 He held academic positions at both Oxford University (Magdalen College, 1925–1954) and Cambridge University (Magdalene College, 1954–1963).
 He is best known for his works of fiction, especially "The Screwtape Letters", "The Chronicles of Narnia", and "The Space Trilogy", and for his non-fiction Christian apologetics, such as "Mere Christianity", "Miracles", and "The Problem of Pain".
Cair Paravel is the fictional castle where the Kings and Queens of Narnia rule in "The Chronicles of Narnia".
 It is the location of the four thrones of High King Peter the Magnificent, High Queen Susan the Gentle, King Edmund the Just, and Queen Lucy the Valiant.
Susan Pevensie is a fictional character in C. S. Lewis's "The Chronicles of Narnia" series.
 Susan is the elder sister and the second eldest Pevensie child.
 She appears in three of the seven books—as a child in "The Lion, the Witch and the Wardrobe" and "Prince Caspian", and as an adult in "The Horse and His Boy".
 She is also mentioned in "The Voyage of the Dawn Treader" and "The Last Battle".
 During her reign at the Narnian capital of Cair Paravel, she is known as Queen Susan the Gentle or Queen Susan of the Horn.
 She was the only Pevensie that survived the train wreck (because she was not on the train or at the station) on Earth which sent the others to Narnia after "The Last Battle".