Francis Claudius Armstrong (1802-1872). Little is known about his life other than he was born in the Isle of Man, possibly served as a captain in the Sardinian Navy, and in later life lived in Kidwelly, Wales. The novels are out of print and information is limited. They are sometimes listed as being written by Frances Charlotte Armstrong (1838-1930) and are often subtitled as romances and as being in 3 volumes. The books are listed below where the title indicates they may be nautical, however due to lack of information they may not be HNF. Some of his novels are not copyright in many countries and are available as free eBooks.
AOS Naval Fiction
Series: n/a
The Two Midshipmen: A Tale of the Sea : Henry Tressider commanding a prize is shipwrecked in France.
The Young Commander : Believed to be principally a shore based novel
The Sailor Hero, or The Frigate and the Lugger : A Nautical Romance
The Naval Lieutenant : A Nautical Romance
Perils by Sea and by Land or The Neapolitan Commander : A Romance of Sea & Land
The Cruise of the "Daring" : A Tale of the Sea.
The Young Middy, or The Perilous Adventures of a Boy-officer : A Midshipman and his cousin, lost in fog in a small boat, are picked up by a privateer
Sunny South; or The Battle on the Bosphorus : A Romance
AOS Pirate Fiction
Series: n/a
The Pirates of ‘The Foam’ : When his benefactress dies an orphan is sent to sea in mysterious circumstances
Lion of War: Or The Pirates of Loo Chow : A tale of the Chinese seas
The Two Buccaneers : A rebel family escape England, becoming involved with Buccaneers.