!!The Books Trivia:
* AuthorExistenceFailure: ''Crisis'' and ''The Point and the Edge'' were left unfinished when Forrester died.
* {{Defictionalization}}: C. Northcote Parkinson (he of Parkinson's Law) wrote a thick, [[ShownTheirWork thoroughly researched]] and realistic biography of Hornblower that could easily be mistaken for being about a real naval hero. Complete with portraits, maps, a family tree, and some plausible extrapolations. For example, Hornblower's first name was really Horace, and a letter released a century after his death reveals [[spoiler:he really did kill Captain Sawyer]].
* RealitySubtext: ''Commodore'' was less historically-researched than the others. Instead, it reflects UsefulNotes/WorldWarII: Russia's tenuous alliance with England and threat from invaders, occupied and/or neutral Baltic/Scandanavian powers, and Britain's tenuous support.
* ReferencedBy: See ReferencedBy.HoratioHornblower. Some Shout Outs belong probably to both book and TV series.

!!The TV Series Trivia
* DawsonCasting:
** Horatio, 17 years old as of the first film, was played by 25-year-old Creator/IoanGruffudd.
** Same with the then-25 year old Creator/JamieBamber as 17-year old Archie Kennedy.
* DoingItForTheArt: The first series was filmed on ships, and it looked ''awesome''. The second series wasn't; but it still looked pretty good. Sadly averted with the third series, which was done carelessly, and it shows, especially compared to the previous cool instalments.
* ExecutiveMeddling: The Forrester estate would only let "Mutiny" and "Retribution" film if Archie Kennedy was written out. (Not unreasonably, since his friendship with Horatio was changing Horatio's characterization too drastically from the source.) The writers convinced them to at least [[spoiler: let him die on screen. They then pulled a fast one and had Archie perform a HeroicSacrifice to save Horatio.]] And the estate couldn't do anything about it. It could also be argued as a case of BeCarefulWhatYouWishFor: [[spoiler: they got the dour Horatio of the books, but fans (those that don't ignore Archie's death, anyway) interpret that as a result of the circumstances of Archie's death, rather than a part of his personality.]]
* FakeAmerican: The Irish/English actress Camilla Power as American Betsy [[spoiler: Bonaparte]].
* FanNickname:
** "Crumpet" for Archie Kennedy
** "Ratio" for Horatio Hornblower
** Mariette is sometimes referred to as "Frogette"
* FanCommunityNickname: Archie's fans call themselves Crumpeteers. [[note]]It originated at A&E message board "A Naughty Pellew Fantasy". The nickname then appeared in a piece of fan fic "All About Major E." AKA "All About Lord Edrington" by Karen (AKA [=SeaSpotRun=]). It was a tongue-in-cheek questionnaire filled in by Major Edrington who called Archie "a panicky bit of Blonde Crumpet".[[/note]]
* ImageSource:
** BadassAdorable.LiveActionTV
** BurialAtSea
** ReverseArmFold
* KeepCirculatingTheTapes: A&E Network/Meridian never released the show's epic music score, no matter how badly fans begged for it. The best fans can do is to rip the sound from [=DVDs=]. There are files to be found on line, but there are some background noises...
* SendingStuffToSaveTheShow: ''Hornblower'' fans (mostly fan girls) organize postcard drives from time to time. Unfortunately to no success, but hope never dies.
* WeaponsUnderstudies: The HMS ''Indefatigable'', a 44 gun heavy frigate razéed from a 64 gun ship of the line due to that class' obsolescence, mounting heavier guns and thicker hull than normal, is portrayed by the ''Grand Turk'', a replica of the 20 gun post ship HMS ''Blandford'', which only mounts ten guns, six nine pounders and four 6 pounders. In "The Even Chance", it (more accurately) doubles as the corvette ''Papillon'', which [[ViolationOfCommonSense somehow]] sinks the 74 gun ''Justinian'', despite not mounting guns that could even dent her hull.
* WhatCouldHaveBeen: Creator/PaulMcGann was cast in the adaptation of ''Literature/{{Sharpe}}'', but he broke his leg and the role was re-cast. If that hadn't happened, he would have been shooting ''Sharpe'' and Mr Bush would have been portrayed by somebody else.
* WordOfStPaul: According to Jamie Bamber, Archie is the third son of Scottish lord. Given his status as a CompositeCharacter, the majority of his backstory is composed of either the actors' and writers' statements about him, or {{Fanon}}.
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