Question: What nationality is the creator of the fictional "Montgomery Montgomery"?

Context articles: Anne of Green Gables
I, Darrin, Take This Witch, Samantha
The Reptile Room
Daniel Handler
Anne Shirley
John R. Montgomery
Ten Gentlemen from West Point
Dusty Donovan and Lucy Montgomery
Teddy Montgomery
Looking for Anne of Green Gables

Anne of Green Gables is a 1908 novel by Canadian author Lucy Maud Montgomery (published as L. M. Montgomery).
 Written for all ages, it has been considered a children's novel since the mid-twentieth century.
 It recounts the adventures of Anne Shirley, an 11-year-old orphan girl who is mistakenly sent to Matthew and Marilla Cuthbert, a middle-aged brother and sister who had intended to adopt a boy to help them on their farm in the fictional town of Avonlea on Prince Edward Island.
 The novel recounts how Anne makes her way with the Cuthberts, in school, and within the town.
"I, Darrin, Take This Witch, Samantha" (also known simply as "I, Darrin") is the pilot episode of American television series "Bewitched".
 The episode was produced three weeks after starring actress Elizabeth Montgomery gave birth to her first child with her husband, series director William Asher.
 The episode was written by Sol Saks, the creator of the series, and initially aired on September 17, 1964.
 José Ferrer served as the episode's narrator, starting with the words, "Once upon a time...".
 Ferrer was not credited for this role.
 In the episode, Samantha Stephens promises her new husband Darrin that she will not use magic, a promise that initiates a pattern that continues into each subsequent episode of the series; the conflict in each episode surrounds Samantha's failed attempts to keep her promise.
The Reptile Room is the second book in the children's series "A Series of Unfortunate Events", written by Daniel Handler under the pseudonym Lemony Snicket.
 The book tells the story of the Baudelaire orphans, as they are sent to live with a distant relative named Montgomery Montgomery.
 The villainous Count Olaf arrives in an attempt to steal the children's inheritance, killing their guardian but failing to steal the fortune.
Daniel Handler (born February 28, 1970) is an American writer, musician and journalist.
 He is best known for his work under the pen name Lemony Snicket, having published children's series "A Series of Unfortunate Events" and "All the Wrong Questions" under this pseudonym.
 He has also published adult novels under his real name; his first book "The Basic Eight" was rejected by many publishers for its dark subject matter.
 His most recent book is "All the Dirty Parts".
 Handler has also played the accordion in several bands.
Anne Shirley is a fictional character introduced in the 1908 novel "Anne of Green Gables" by Lucy Maud Montgomery.
 Montgomery wrote in her journal that the idea for Anne's story came from relatives who, planning to adopt an orphaned boy, received a girl instead.
 Anne Shirley's appearance was inspired by a photograph which Montgomery clipped from the Metropolitan Magazine and kept, unaware of the model's identity as the 1900s Gibson Girl Evelyn Nesbit.
John R. Montgomery IV is a television producer and advertising industry veteran.
 Currently, he serves as an Executive Producer for the CBS series "Superior Donuts".
 Previously, he was an Executive Producer on the CW reboot of "MADtv" and the Creator/Executive Producer of the web series "Attention Deficit Theater", which made its debut at SXSW and is available on CW Seed.
 In addition, Montgomery was an Executive Producer on CBS' "The Crazy Ones".
 There, he also received the unique credit: "Suggested by the Experiences of" as the series was based in part on Montgomery's 33-year career at the Leo Burnett advertising agency in Chicago.
 Show creator David E. Kelley cited Montgomery as the inspiration for the "The Crazy Ones" and character Simon Roberts, portrayed by Robin Williams.
Ten Gentlemen from West Point is a 1942 film directed by Henry Hathaway.
 It stars George Montgomery and Maureen O'Hara.
 Its cinematography was nominated for an Academy Award in 1943.
 George Montgomery replaced John Payne who was suffering an emotional upset at the time.
 The story tell a fictional story of the first class of the United States Military Academy in the early 1800s.
Dustin "Dusty" Donovan and Lucinda Marie "Lucy" Montgomery are fictional characters from the long running CBS daytime soap opera "As the World Turns", and have been deemed a very popular couple during their time together.
 Dusty, a character who's been with the show on and off since 1983, was the older bad boy on the show, and Lucy, daughter of legacy characters Craig Montgomery and Sierra Esteban, was the spoiled younger brat.
 These aspects made them very popular among the fans.
Theodore "Teddy" Montgomery is a fictional character on The CW television series "90210", the fourth series in the "Beverly Hills, 90210" franchise.
 Portrayed by Trevor Donovan, Teddy Montgomery was introduced in the second season premiere as a recurring character.
 Where in season three he was upgraded to series regular; however, by season four he was downgraded to a recurring cast member once more.
 In season 5, he returned in a recurring role.
Looking for Anne of Green Gables: The Story of L. M. Montgomery and her Literary Classic is a dual biography of Anne Shirley and her creator L. M. Montgomery. "
Anne of Green Gables" is a 1908 children’s novel which has been read by over fifty million readers and translated into over thirty-five languages.
 The author reconstructs the development of Anne Shirley, the main character in Montgomery's novel.