Question: Which novel written by Robert Louis Stevenson gave rise to the name of one of the main competitors of Arthur Treacher's Fish and Chips?

Context paragraphs:
Long John Silver's: Long John Silver's LLC is an American fast-food restaurant chain that specializes in seafood.  The brand's name is derived from the novel "Treasure Island" by Robert Louis Stevenson, in which the pirate "Long John" Silver is one of the main characters.  Formerly a division of Yum!  Brands, Inc., the company was divested to a group of franchisees in September 2011.

Arthur Treacher's: Arthur Treacher's Fish and Chips is a fast food seafood restaurant chain.  At the peak of its popularity in the late 1970s, it had about 800 stores.  s of 2016 , following the closure of the sole Virginia and Pennsylvania locations, there are only eight remaining: three in New York; four in Ohio; and one in New Jersey (at the Bridgewater Commons).  Most locations have been co-branded with Nathan's Famous.  In the Rochester, New York area, there are seven Arthur Treacher's locations, all co-branded with Salvatore's Old Fashioned Pizzeria.  The menu offers fried seafood or chicken, accompanied by chips.  Its main competitors are Long John Silver's and Captain D's.  In 2015, a co-branded Nathan's Famous and Arthur Treacher's Fish and Chips opened in the food court of the Harrah's Cherokee Valley River Casino in Murphy, NC.

Arthur Treacher: Arthur Veary Treacher (23 July 1894 – 14 December 1975) was an English film and stage actor active from the 1920s to the 1960s, and known for playing English stereotypes, especially butler and manservant roles, such as the P.G. Wodehouse valet character Jeeves ("Thank You, Jeeves" ,1936) and the kind butler Andrews opposite Shirley Temple in "Heidi" (1937).  In the 1960s, he became well-known on American television as an announcer/sidekick to talk show host Merv Griffin.  He lent his name to the Arthur Treacher's Fish and Chips chain of restaurants.

The Case Against Mrs. Ames: The Case Against Mrs. Ames is a 1936 mystery-drama film written by C. Graham Baker and Gene Towne based on a serial of the same name by Arthur Somers Roche originally published in "Collier's Weekly" magazine in 1934, and then as a novel in 1936.  The film was directed by William A. Seiter and stars Madeleine Carroll and George Brent, and features Arthur Treacher, Alan Baxter, Beulah Bondi and Alan Mowbray.

Finiels: Finiels is a hamlet on the slopes of Mont Lozère.  It has a small number of inhabitants and a "chambre d'hote" and other visitor accommodation.  The nearest village with convenience shopping is Le Pont-de-Montvert, roughly 6 km to the south.  Finiels lies on the Robert Louis Stevenson Trail (GR 70), a popular long-distance path following approximately the route travelled by Robert Louis Stevenson in 1878 and described in his book "Travels with a Donkey in the Cévennes".  A 'Fete of the Myrtilles' (bilberries) is held every August.

In the South Seas: "This page discusses the 1973 Canadian television series.  For the posthumous book of Robert Louis Stevenson titled In the South Seas, see Robert Louis Stevenson."

Robert Louis Stevenson Memorial: The Robert Louis Stevenson Memorial is an outdoor memorial commemorating Robert Louis Stevenson, installed in San Francisco's Portsmouth Square, in the U.S. state of California.

GR 70: The GR 70, also known as the Chemin de Stevenson or the Robert Louis Stevenson Trail, is a Grande Randonnée (long-distance footpath) that runs through the French departments of Haute-Loire, Lozère and Gard in a generally north–south direction from Le Monastier-sur-Gazeille to Saint-Jean-du-Gard.  It follows approximately the route taken by Robert Louis Stevenson in 1878, a journey described in his book "Travels with a Donkey in the Cévennes".

The Strange Door: The Strange Door is a 1951 American film noir thriller horror film, released by Universal Pictures.  The film starred Charles Laughton, Boris Karloff, Sally Forrest and Richard Stapley.  Karloff's role is actually a support one but his name carried significant weight in the billing.  It was directed by Joseph Pevney and was based on the short story "The Sire de Maletroit's Door" by Robert Louis Stevenson.  Its alternative title was "Robert Louis Stevenson's The Strange Door".

Robert Louis Stevenson School, Samoa: Robert Louis Stevenson School is a Private Primary and Secondary School located in Samoa's capital city of Apia.  Robert Louis Stevenson is based on an Australian and New Zealand curricula.  Robert Louis Stevenson School is known for educating children from Samoa's Richest Families and for having a school roll with mainly Half-Cast or "Afakasi" Pupils.

Supporting paragraphs: Arthur Treacher's Long John Silver's
Answer: "Treasure Island"