Question: Who founded the publishing company White Wolf , Inc., in which the role-playing game King Arthur Pendragon was originally published 

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King Arthur (DC Comics): King Arthur (Arthur Pendragon) is a fictional character, a comic book King published by DC Comics.  Arthur debuted in "New Comics" #3, (February 1936), and was created by Rafael Astarita.  The character is based on the mythical ruler King Arthur whose earliest recorded appearances were in the "Annales Cambriae", the "Historia Brittonum", and the "Y Gododdin".  The character of King Arthur was made popular by Geoffrey of Monmouth's second major work, the "Historia Regum Britanniae" (History of the Kings of Britain),

The Staff of Karnath: The Staff of Karnath is an action-adventure video game developed and published by Ultimate Play the Game for the Commodore 64 originally in 1984 and in the United States in 1985.  The game is the first instalment of the "Pendragon" series and is the first to feature the aristocrat adventurer Sir Arthur Pendragon.  In the game, Sir Pendragon is tasked with searching a castle for the ancient Staff of Karnath, which he must destroy prior to midnight, before it wipes out the human race.

Pendragon's Banner: Pendragon's Banner is an historical fantasy trilogy by the British author Helen Hollick, published by William Heinemann in 1994, and later by Sourcebooks Inc in 2009 and by SilverWood Books in 2011.  The three books are a re-telling of the King Arthur legend.  They look to show Arthur Pendragon as he might have really been - no magic, fantasy or medieval legend.  This is the basic, post-Roman view of Arthur as a battle-hardened warlord.

Vampire: The Dark Ages: Vampire: The Dark Ages is a role-playing game originally published by White Wolf Game Studio in 1996.  Later, in 2002, the gameline was replaced by .  "Vampire: The Dark Ages" is a spin-off from the game, also published by "White Wolf", the latter set in modern times.

Vampire: The Masquerade – Bloodlines: Vampire: The Masquerade – Bloodlines is a 2004 action role-playing video game developed by Troika Games and released by Activision for Microsoft Windows.  Set in White Wolf Publishing's World of Darkness, the game is based on White Wolf's role-playing game "" and follows either a male or female character who is killed and subsequently revived as a fledgling vampire.  The game depicts the fledgling's journey through 21st-century Los Angeles to uncover the truth behind a recently discovered relic that heralds the end of all vampires.

Stewart Wieck: Stewart Douglas Wieck (May 10, 1968 June 22, 2017) was one of the founders of the publishing company, White Wolf, Inc. He was also one of the original writers of .

Vampire: The Masquerade – Redemption: Vampire: The Masquerade – Redemption is a 2000 role-playing video game developed by Nihilistic Software and published by Activision.  Set in White Wolf Publishing's World of Darkness, the game is based on White Wolf's role-playing game "" and follows the adventures of Christof Romuald, a 12th-century French crusader who is killed and subsequently revived as a Vampire.  The game depicts Christof's centuries-long journey from the Dark Ages of 12th century Prague and Vienna to modern-day London and New York City in search of his humanity and his kidnapped love, the nun Anezka.

Green Knight Publishing: Green Knight Publishing was founded by Peter Corless after he bought the rights to the award-winning "Pendragon" role-playing game from Chaosium in 1998.  From 1999 to 2001, Green Knight published supplements for the role-playing game, in which players take on the roles of knights and ladies performing chivalric deeds in Arthurian Britain.  Under the direction of executive editor James Lowder and consulting editor Raymond H. Thompson, Green Knight also continued the Pendragon fiction series, which offered reprints of "lost" classics of Arthurian fiction, as well as original novels and anthologies.  The company sold the rights to the Pendragon RPG to White Wolf, Inc. in 2004.

White Wolf Publishing: White Wolf Publishing is an American roleplaying game and book publisher.  The company was founded in 1991 as a merger between Lion Rampant and "White Wolf Magazine" (est. 1986 in Rocky Face, GA; it later became "White Wolf Inphobia"), and was initially led by Mark Rein·Hagen of the former and Steve Wieck and Stewart Wieck of the latter.  Since White Wolf Publishing, Inc. merged with CCP Games in 2006, White Wolf Publishing has been an imprint of CCP hf, but has ceased in-house production of any material, instead licensing their properties to other publishers.  It was announced in October 2015 that White Wolf had been acquired from CCP by Paradox Interactive.  The name "White Wolf" originates from Michael Moorcock's works.

Pendragon (role-playing game): Pendragon, or King Arthur Pendragon, is a role-playing game (RPG) in which players take the role of knights performing chivalric deeds in the tradition of Arthurian legend.  It was originally written by Greg Stafford and published by Chaosium, then was acquired by Green Knight Publishing, who in turn passed on the rights to White Wolf Publishing in 2004.  White Wolf sold the game to Stewart Wieck in 2009.  Wieck formed Nocturnal Media, which has since updated and reissued the 5th edition originally published by White Wolf.

Supporting paragraphs: Pendragon (role-playing game) Stewart Wieck
Answer: Stewart Douglas Wieck