Who wrote the Fiend Folio? The final chapter

Name	#	Monsters	Author Notes
Oracle, Underworld	5	Apparition, Death dog, Enveloper, Gibberling, Huecuva	“Underworld Oracle” is obviously a pseudonym. My guess is that it represents the duo of Lou Nisbet and Phil Alexander, who co-published/co-edited the Scottish zine of the same name before a falling out. Lou Nisbet is otherwise a cipher, but Phil Alexander also has a couple Alarums & Excursion credits and one in the UK wargame mag Phoenix.
Patterson, Mary	1	Pernicon	Some work in one issue of the zine Illusionist’s Vision.
Pulsipher, Lewis	8	Bat (giant), Denzelian, Elemental princes of evil [x5], Poltergeist	One of the more prolific article writers in the early days of RPGs, with numerous pieces in Adventure Gaming, Alarums & Excursions, Dragon, White Dwarf, Chimaera, Different Worlds, The Dungeoneer, Dungeoneers Journal, Gameplay, Games International, The Hobbit Hole, Imagine, News from Bree, Pegasus, Sorcerer’s Apprentice, The Space Gamer, Trollcrusher, and probably other mags that I missed. I can’t find any RPG product credits for him beyond articles in periodicals. Several boardgame design credits include Britannia, Sea Kings, Hyborian Risk, Valley of the Four Winds, Stalingrad Beseiged, and Dragonrage.  Author of Game Design: How to Create Video and Tabletop Games, Start to Finish. Teaches game design at the college level. Has his own youtube channel on the subject. Also has his own webpage.
Reynolds, Colin	1	Tirapheg	Some articles in White Dwarf.
Riggs, Nicholas	1	Thoqqua	No further info available.
Roberts, Mike	2	Hound of ill omen, Tentamort	No further info available.
Schick, Lawrence	4	Aarakocra, Kelpie, Khargra, Tabaxi	Former head of development at TSR. Hired Tom Moldvay. Most famous D&D credit is the module S2 White Plume Mountain. Had his hand in several other TSR projects, perhaps most notably the Slavers modules and Star Frontiers. Also wrote the adventure Eternity, Inc for the DC Heroes rpg and Divine Intervention, one half of Double Adventure 6 for Traveller. Author of Heroic Worlds, A History and Guide to Role-Playing Games, which is my favorite reference book on the early hobby. Later went into video games. Worked for Coleco during the first video games boom, later went to MicroProse. Former America Online executive. Did work on The Elder Scrolls Online.
Scurfield, Bob	1	Whipweed	Contributor to Treasure Chest article (ongoing reader submission column for magic items, NPCs, and other small bits and bobs)  in White Dwarf #12.
Shaw, Simon	1	Gambado	Contributor to Treasure Chest article in White Dwarf #14.
Shearer, Guy	1	Adherer	No further info available.
Shepherd, Rik	2	Dark creeper, Kenku	One credit in the Call of Cthulhu fanzine Dagon. I cannot confirm that the same Rik Shepherd is responsible for this delightful website.
Stollery, Martin	4	Mephit [x4]	Contributions in a couple of issues of The Beholder zine.
Stross Charles	10	Death knight, Githyanki, Githzerai, Slaad [x7]	White Dwarf #33 contains his write-up of Zytra, Demon Lord of Mind Flayers. Hugo-award winning sci-fi/fantasy author best known for his Merchant Princess and Laundry Files series of novels. The latter was turned into a licensed rpg by Cubicle 7.
Sweet, David	6	Dragon (oriental)[x6]	A.k.a. Dave Sweet. Article on Chinese undead in Dragon #26. At least one article in e-zine Chaosium Digest. Later did art for the Fading Suns rpg line.
Taylor, David	3	Ettercap, Goldbug, Hellcat	Created the Mindweb, a gestalt monster appearing in White Dwarf #14.
Tilbrook, Simon	2	Flail snail, Necrophidius	Also wrote up the Phung, a mantis-headed monster from a Jack Vance novel, in White Dwarf #18. There’s a retired history teacher with this name whose twitter account has a still from Monty Python and the Holy Grail on display, so I’m going to assume that’s our man.
Torchia, Andrew	1	Quaggoth	No further info available.
Waring, Dave	1	Firedrake	A.k.a. David Waring. Contributor to Alarums & Excursions, Trollcrusher, Demonsblood, and the Diplomacy/postal game zines Gallimaufry and The Tinamou.
Waugh, Ian	1	Tween	Created the Pervert character class published in White Dwarf #1. Another credit in wargame magazine The Phoenix.
Wells, Jean	2	Caryatid column, Giant (fog)	TSR employee from ‘79 to ‘81, during which time she answered questions in Dragon’s Sage Advice column, among other things. Edited B2 The Keep on the Borderlands. Perhaps best known today as the author of the original version of B3 Palace of the Silver Princess, which WotC published as a free pdf back in 2000. Print copies of this rare item now go for thousands of dollars. Her PC Ceatitle, a 10th level magic-user, appears in the accessory The Rogues Gallery. Wells did the layout for that work. Died in 2012.
White, Neville	3	Qullan, Shadow demon, Stunjelly	A.k.a. Alex White, a.k.a. Neville Alexander White. Article in Trollcrusher. Operates a one man game company called Plane Sailing Games.
Wood, Steve	1	Umpleby	There are a couple of Steve Woods with credits in the hobby. Not sure if the Fiend Folio author is any of them.
Wormell, David	3	Mantari, Sheet ghoul, Sheet phantom	No further info available.
Wyndham, Jeff	1	Dire corby	No further info available.

I'm thinking someone needs to write an adventure where the two-headed Oracle of the Underworld sends the PCs on a quest where they encounter Apparitions, Death dogs, an Enveloper, Gibberlings, and a Huecuva.