Title: Sir Thursday
Content:  Sir Thursday is a young adult fantasy novel written by Australian author Garth Nix. It is the fourth book in the series The Keys to the Kingdom, and was released in March 2006. Sir Thursday continues from the preceding book, following the adventures of a boy named Arthur as he attempts to claim mastership of the fourth part of a magical world. As with the other books in the series, the theme of 'seven' is prevalent, along with the themes of sin and virtue. The book received generally favourable critical response, but was criticised for a slow pace, among other issues.
Title: Thursday
Content:  In the cross media work Thursday's Fictions by Richard James Allen and Karen Pearlman, Thursday is the title character, a woman who tries to cheat the cycle of reincarnation to get a form of eternal life. Thursday's Fictions has been a stage production, a book, a film and an 3D online immersive world in Second Life. ; Thursday Next is the central character in a series of novels by Jasper Fforde. ; In Garth Nix's popular The Keys to the Kingdom series, Thursday is an antagonist, a violent general who is a personification of the actual day and the Sin of Wrath. ; According to Nostradamus' prediction (Century 1, Quatrain 50), a powerful (but otherwise unidentified) leader who will threaten "the East" will be born of three water signs and takes Thursday as his feast day. 
Title: Mrs Thursday
Content:  Mrs Thursday is a British television comedy-drama produced by Associated Television. It stars veteran British actress Kathleen Harrison as Alice Thursday, a Cockney charwoman who inherits £10 million and the controlling interest in a multinational company upon the death of her employer, as well as his Rolls Royce and Mayfair mansion. Hugh Manning played Richard Hunter, Mrs. Thursday's butler, business advisor, and confidant. Reg Lye played Bill Lee. The series was devised by Ted Willis and featured scripts by Jack Rosenthal. Three series, thirty-eight episodes, of Mrs. Thursday were produced. Series One (13 episodes) was broadcast between March 15 and June 7, 1966; Series Two (13 episodes) between 27 December 1966 and 20 March 20 1967; and Series Three (12 episodes) between 5 October and 22 December 1967. Series One is available on DVD. Series Two was released on DVD on 30 September 2013. Series Three, as of June, 2020, still hasn't been released. 'The Train from Dunrich House' was partly filmed at Stapleford Park, and featured its miniature railway.
Title: Thursday
Content: Gabriel Syme, the main character, was given the title of Thursday in G. K. Chesterton's novel The Man Who Was Thursday (1908). ; The titular day in Sweet Thursday (1954) (the sequel to John Steinbeck's novel Cannery Row (1945)), the author explains, is the day after Lousy Wednesday and the day before Waiting Friday. ; In The Hitchhiker's Guide to the Galaxy by Douglas Adams, the character Arthur Dent says: "This must be Thursday. I never could get the hang of Thursdays". A few minutes later the planet Earth is destroyed. In another Douglas Adams book, The Long Dark Tea-time of the Soul (1988), one of the characters says to the character Thor, after whom the day was named: "I'm not used to spending the evening with someone who's got a whole day named after them". 
Title: The Man Who Was Thursday
Content:  The Man Who Was Thursday: A Nightmare is a 1908 novel by G. K. Chesterton. The book has been described as a metaphysical thriller.
Title: Thomas Thursday
Content:  Thomas Thursday (1894&ndash;1974) was a lesser-known pulp writer who had one of the longest careers writing for the pulp magazines. His first published short story, "A Stroke of Genius," appeared in Top-Notch (April 1, 1918). He submitted the story to them after finding an old issue in the subway. He used the penname "Thursday" after glancing at a calendar. His real name remains a mystery. He was still appearing in the pulps in the late 1950s, after which the magazine format all but disappeared from the newsstands. Thursday was primarily a humorist, one of the few in the pulps. He appeared regularly in Top-Notch through the mid-1920s, then transitioned to Argosy. Many of his story titles featured wordplay, e.g. "Illiterature" 
Title: Mrs Thursday
Content: A Ride in a Rolls Royce ; Call Me Madam ; Family Reunion ; Thursday's Child ; Honesty Is the Best Policy ; The Girl from Fuller Street ; The Canvas Jungle ; You Don't Have to Book for Buckingham Palace ; The Snows of Yesteryear ; Hunter's Moon ; The Full Dress Affair ; The Sitting Tenant ; Margate Comes But Once a Year A Little of What You Fancy ; Changes Over the Counter ; The Train from Dunrich Station ; The Duke and I ; When My Boy Comes Home ; Only Washing and Babies ; We Don't Pay London Prices ; The Answer Is a Lemon ; No Tea for 
Title: Thursday's Child (TV series)
Content:  Thursday's Child is a British television series adaptation of Noel Streatfeild's 1970 children's historical novel of the same name. Consisting of six episodes, the series aired on BBC One between December 27, 1972 and January 31, 1973. The series stars Claire Walker as Margaret Thursday, Gillian Bailey as Lavinia Beresford, Simon Gipps-Kent as Peter Beresford, David Tully as Horatio Beresford, Caroline Harris	as Miss Snelston, Althea Parker as Matron, Kit Daniels as Jem, Maxine Kalli as Susan, Anne Pichon as Miss Jones, Jill Riddick as Clara, Cindy O'Callaghan as Winifred, Edwin Brown as Filbert, Susan Field as Ma Smith, Joy Harington as Mrs. Tanner, Anne Ridler as Lady Corkberry, Peter Williams as Lord Corkberry, Will Stampe as Captain Smith, and Arthur Blake as PC Perkins. The series was entered into the 1973 Monte-Carlo Television Festival; placing third in the children's television program category.
Title: The Man Who Was Thursday
Content:  There have been at least two adaptations broadcast by BBC radio over the years. In 1986 the BBC broadcast a four-part series dramatised by Peter Buckman and directed by Glyn Dearman. It featured Michael Hadley as Thursday/Gabriel Syme, Natasha Pyne as Rosamond and Edward de Souza as Wednesday/The Marquis de St. Eustache. In 2005 the BBC broadcast the novel as read by Geoffrey Palmer, as thirteen half-hour parts. It has been re-broadcast several times since then, including in 2008 (one hundred years after first publication) 2016 and 2020.
Title: First Among Sequels
Content:  book, The Great Samuel Pepys Fiasco reflected her more compassionate nature. Unfortunately, the result was Thursday5, a nice, but dopey, insufferable drip. The Great Samuel Pepys Fiasco was remaindered within six months of publication, while the Thursday1–4 novels continued to sell well. She has been allocated to Thursday as a Jurisfiction cadet for training. As with Thursday1-4, Thursday5 looks exactly the same as the real Thursday, despite her novel being set 6 years earlier; ; Landen Parke-Laine – Thursday's husband; ; Friday Next – the eldest child of Thursday and Landen, and the only boy. Apparently a "tedious teenage cliché: grunting, sighing at any request, and staying in bed until past midday"; ; Tuesday Next – the daughter 

Question: Who is the author of Sir Thursday?
Answer: Garth Nix.
Garth Richard Nix.