Question: What was the middle name of the author, whose secret agent, the actor, Barry Nelson, was the first to portray ?

Context paragraphs:
Marion Christopher Barry: Marion Christopher Barry was born in June 1980 to Marion Barry and Barry's third wife, Effi Slaughter Barry.  He was their only child.  His father had wanted to name him Marion Barry III, but Effi was strongly opposed, and they decided to give him the middle name Christopher instead.  For most of his adult life, Barry went by his middle name, Christopher.

Casino Royale (Climax!): "Casino Royale" is a live 1954 television adaptation of the novel of the same name by Ian Fleming.  An episode of the dramatic anthology series "Climax! ", the show is the first screen adaptation of a James Bond novel and stars Barry Nelson, Peter Lorre, and Linda Christian.  Though this marks the first onscreen appearance of the secret agent, Nelson's Bond is played as an American spy with "Combined Intelligence Agency" and is referred to as "Jimmy" by several characters.

Secret Story 3 (France): The principle is similar to that of Loft Story.  The contestants are kept locked away for 14 weeks in a house, called ""La Maison des Secrets"" (the House of Secrets) measuring 1600m² styled on the UK Big Brother house including a swimming pool, jacuzzi, a lounge, a big bedroom divided by a shattered glass, bathroom with showers and 5 secrets room which are the Crystal room, Love Cave, Museum of Secrets, White Room and Bedsit (like Big Brother 5 UK).  All of the rooms are installed with cameras, (except the toilet due to a law imposed by the "Conseil Supérieur de l'audiovisuel").  "The Voice" speaks to the contestants at times, and acts like "Big Brother" in other countries.  Each contestant has to conceal a secret which the other contestants must try to discover.  If a contestant does, that contestant wins the jackpot of the contestant whose secret they have guessed.  Each secret is worth €10,000.  Each Tuesday, 2 contestants are nominated and put up against the public vote, one housemate will be evicted every Friday.  Housemates are only permitted to nominate every other week and housemates are only allowed to nominate other housemates of the opposite sex.

Ian Fleming: Ian Lancaster Fleming (28 May 1908 – 12 August 1964) was an English author, journalist and naval intelligence officer who is best known for his James Bond series of spy novels. Fleming came from a wealthy family connected to the merchant bank Robert Fleming & Co., and his father was the Member of Parliament for Henley from 1910 until his death on the Western Front in 1917.  Educated at Eton, Sandhurst and, briefly, the universities of Munich and Geneva, Fleming moved through several jobs before he started writing.

Batcave: The Batcave is a fictional subterranean location appearing in American comic books published by DC Comics.  It is the secret headquarters of the superhero Batman, whose secret identity is Bruce Wayne, consisting of a series of underground caves beneath his personal residence, Wayne Manor.

Secret Story 1 (France): The principle is similar to that of Loft Story.  The contestants are kept locked away for 10 weeks in a house, called ""La Maison des Secrets"" (the House of Secrets) measuring 1600 m² styled on the UK Big Brother 8 house including a swimming pool, jacuzzi, a lounge (where the bath is), bathroom with showers, and separate bathrooms for each sex.  All of the rooms are installed with cameras, except the toilet due to a law imposed by the "Conseil Supérieur de l'audiovisuel".  "The Voice" speaks to the contestants at times, and acts like "Big Brother" in other countries.  Each contestant has to conceal a secret.  Everyone else has to try and discover it.  If a contestant does, that contestant wins the jackpot of the contestant whose secret they have guessed.  Each secret is worth €10,000.  Each Tuesday, 2 contestants are nominated and put up against the public vote to be evicted on the Friday.  The girls and boys nominate the opposite sex, alternating weekly.

Secret Story 2 (France): The principle is similar to that of Loft Story.  The contestants are kept locked away for 10 weeks in a house, called ""La Maison des Secrets"" (the House of Secrets) measuring 1600m² styled on the UK Big Brother house including a swimming pool, jacuzzi, a lounge, a big bedroom divided by a shattered glass, bathroom with showers and 5 secrets room (Crystal room, Love cave, Museum of Secrets, White Room, Bedsit [like BBUK5]).  All of the rooms are installed with cameras, (except the toilet due to a law imposed by the "Conseil Supérieur de l'audiovisuel").  "The Voice" speaks to the contestants at times, and acts like "Big Brother" in other countries.  Each contestant has to conceal a secret.  Everyone else has to try and discover it.  If a contestant does, that contestant wins the jackpot of the contestant whose secret they have guessed.  Each secret is worth €10,000.  Each Tuesday, 2 contestants are nominated and put up against the public vote to be evicted on the Friday.  The girls and boys nominate the opposite sex, alternating weekly.

Samson and Delilah (1949 film): Samson and Delilah is a 1949 American romantic biblical drama film produced and directed by Cecil B. DeMille and released by Paramount Pictures.  It depicts the biblical story of Samson, a strongman whose secret lies in his uncut hair, and his love for Delilah, the woman who seduces him, discovers his secret, and then betrays him to the Philistines.  It stars Hedy Lamarr and Victor Mature in the title roles, George Sanders as the Saran, Angela Lansbury as Semadar, and Henry Wilcoxon as Ahtur.

Barry Nelson: Barry Nelson (April 16, 1917 – April 7, 2007) was an American actor, noted as the first actor to portray Ian Fleming's secret agent James Bond.

Anacleto, agente secreto: Anacleto, agente secreto (Anacleto, Secret Agent) is a Spanish comic character created by cartoonist Manuel Vázquez Gallego in 1964, protagonist of the series of the same name.  Anacleto is an inept secret agent with very bad luck.  His adventures usually include going to a desert and, when returning, realising that he has made a completely useless trip.  He is one of the author's most popular characters.

Supporting paragraphs: Barry Nelson Ian Fleming
Answer: Lancaster