Title: Conan, Lord of the Black River
Content:  Conan, Lord of the Black River is a fantasy novel by American writer Leonard Carpenter, featuring Robert E. Howard's sword and sorcery hero Conan the Barbarian. It was first published in paperback by Tor Books in April 1996.
Title: Beyond the Black River
Content:  "Beyond the Black River" is one of the original short stories about Conan the Cimmerian, written by American author Robert E. Howard and first published in Weird Tales magazine, v. 25, nos. 5-6, May-June 1935. The story was republished in the collections King Conan (Gnome Press, 1953) and Conan the Warrior (Lancer Books, 1967). It has more recently been published in the anthology The Mighty Swordsmen (Lancer Books, 1970), and the collections The Conan Chronicles Volume 2: The Hour of the Dragon (Gollancz, 2001) and Conan of Cimmeria: Volume Three (1935-1936) (Del Rey, 2005). It's set in the pseudo-historical Hyborian Age and concerns Conan's battle against a savage tribe of Picts in the unsettled lands beyond the infamous Black River.
Title: The Conan Chronicles (Robert Jordan)
Content:   The Conan Chronicles is a collection of fantasy novels by American writers Robert Jordan, featuring the sword and sorcery hero Conan the Barbarian created by Robert E. Howard. The book was published in 1995 by Tor Books and collects three novels previously published by Tor.
Title: Conan, Scourge of the Bloody Coast
Content:  Conan, Scourge of the Bloody Coast is a fantasy novel by American writer Leonard Carpenter featuring Robert E. Howard's sword and sorcery hero Conan the Barbarian. It was first published in paperback by Tor Books in April 1994.
Title: Conan the Warlord
Content:  Conan the Warlord is a fantasy novel by American writer Leonard Carpenter, featuring Robert E. Howard's  sword and sorcery hero Conan the Barbarian. It was first published in paperback by Tor Books in March 1988, and was reprinted in April 1997.
Title: Conan (books)
Content:  Gate (Nov. 1994) (by Roland Green) ; Conan the Gladiator (Jan. 1995) (by Leonard Carpenter) ; Conan and the Amazon (Apr. 1995) (by John M. Roberts) ; Conan and the Mists of Doom (Aug. 1995) (by Roland Green) ; Conan and the Emerald Lotus (Nov. 1995) (by John C. Hocking) ; Conan and the Shaman's Curse (Jan. 1996) (by Sean A. Moore) ; Conan, Lord of the Black River (Apr. 1996) (by Leonard Carpenter) ; Conan and the Grim Grey God (Nov. 1996) (by Sean A. Moore) ; Conan and the Death Lord of Thanza (Jan. 1997) (by Roland Green) ; Conan of Venarium (Jul. 2003) (by Harry Turtledove) 
Title: Conan the Renegade
Content:  Conan the Renegade is a fantasy novel by American writer Leonard Carpenter, featuring Robert E. Howard's sword and sorcery hero Conan the Barbarian. It was first published in paperback by Tor Books in April 1986. The first British edition was published by Sphere Books in August 1988.
Title: Conan, Lord of the Black River
Content:  After successfully fulfilling his commission to overthrow a tyrannical baron in Koth, Conan travels into Baalur, a city-state in Shem. The queen of Baalur, Rufia, needs his aid. Baalur is suffering from a plague cast upon it by Zeriti, an old enemy of his previously believed dead. Zeriti seeks to settle a score dating from Conan's previous encounter with the two women, told in the story "Hawks Over Shem", and her curse is transforming Rufia's subjects into hideous zombies. With an army of Baalurian soldiers, Conan begins his journey to retrieve a white lotus, the primary antidote for removing Zeriti's cruse, said to only bloom near the source of the Styx, the infamous black river. His army marches across the city-state 
Title: Black Tears (short story)
Content:  "Black Tears" is a short story by American writers L. Sprague de Camp and Lin Carter, featuring the fictional sword and sorcery hero Conan the Barbarian created by Robert E. Howard. It was first published by Lancer Books in the paperback collection Conan the Wanderer (1968), which was reprinted several times, first by Lancer and later by Ace Books through 1982. It has since been published by Orbit Books in the omnibus paperback collection The Conan Chronicles 2 (1990).
Title: Conan the Defender
Content:  Conan the Defender is a fantasy novel by American writer Robert Jordan, featuring Robert E. Howard's  sword and sorcery hero Conan the Barbarian. It was first published in trade paperback by Tor Books in December 1982, followed by a regular paperback edition in December 1983. The book was reprinted by Tor in February 1991 and September 2009. The first British edition was published by Legend in September 1996. It was later gathered together with Conan the Invincible and Conan the Unconquered into the omnibus collection The Conan Chronicles (Tor Books, 1995).

Question: Who is the author of Conan, Lord of the Black River?
Answer: Leonard Carpenter.
Leonard Paul Carpenter.