Fergus or Feargus Gwynplaine MacIntyre (born Paul Grant Jeffery; 9 March 1956 – 25 June 2010),[3] also known as Froggy,[4] was a New York City-based journalist, novelist, poet and illustrator.

[8] Throughout his life, MacIntyre told various stories about his family, birthplace, and childhood that remain unsubstantiated,[9] and which, after his death, his brother confirmed to be fictional.

[10] MacIntyre used a foreign accent and often told people he was orphaned by a Scottish family and raised in an Australian orphanage and a child labour camp.

[12] But a teenage acquaintance alleged that the young MacIntyre spoke then with a plain New York accent from Long Island or Queens, raising questions about his claims of foreign origin.

His short stories were published in Weird Tales,[14] Analog, Asimov's Science Fiction, Amazing Stories, Absolute Magnitude, Interzone,[15] The Strand Magazine and numerous anthologies, including Terry Carr's Best Science Fiction of the Year #10,[16] Michael Reaves and John Pelan's mystery/horror anthology Shadows Over Baker Street,[17] James Robert Smith and Stephen Mark Rainey's horror anthology Evermore, and Stephen Jones's The Mammoth Book of Best New Horror.

For Mike Ashley's The Mammoth Book of Historical Detectives (1995), MacIntyre wrote "Death in the Dawntime", a locked room mystery (or rather, sealed cave mystery) set in Australia around 35,000 BC, which editor Mike Ashley suggests is the furthest in the past a historical whodunnit has been set.

Language authority William Safire acknowledged MacIntyre's neologism of "Clintonym"[19][20] and quoted his historical etymology research.

[21][22] In addition to publishing science fiction in Analog, MacIntyre also contributed to that magazine as an artist, illustrating his own stories and one by Ron Goulart.

[24] In the July 2003 issue of that magazine, MacIntyre mentioned that he was related to the wife of Scottish author Eric Linklater.

[29] On 24 June 2010, police were called to MacIntyre's Bensonhurst apartment by a friend who had received the mass email which alluded to suicide.