Question: Which writer was born first? Jonathan Kellerman or Walter Van Tilburg Clark

Context articles: The City of Trembling Leaves
The Watchful Gods and Other Stories
Track of the Cat
Jonathan Kellerman
When the Bough Breaks (1986 film)
Walter Van Tilburg Clark
Alex Delaware
The Ox-Bow Incident (novel)
Survival of the Fittest (novel)
Jesse Kellerman

The City of Trembling Leaves (1945) is a novel in the semi-autobiographical genre, by Walter Van Tilburg Clark.
 The novel is a series of parallel narratives detailing the lives and work of a group of redacted characters named Tim Hazard, Lawrence Black, Mary Turner, Rachel Wells, Marjory Hale, "Walt", (the narrator) and assorted other side-characters.
The Watchful Gods and Other Stories is a collection of short stories by Walter Van Tilburg Clark published in 1950.
 It brings together eight stories and one novella (the title story).
 Three of the stories had already appeared in the annual anthology of O. Henry Award-winning stories, most notably "The Wind and the Snow of Winter" which was selected by that anthology, in 1945, as their "first-place winner."
 Since this book's publication, two other stories have remained notable: "The Portable Phonograph" and "Hook" have both been widely anthologized since they were published.
Track of the Cat is a 1954 film directed by William A. Wellman and starring Robert Mitchum and Teresa Wright.
 The film is based on a 1949 adventure novel of the same name by Walter Van Tilburg Clark.
 This was Wellman's second adaptation of a Clark novel, the first being "The Ox-Bow Incident".
 "Track of the Cat" was produced by John Wayne and Robert Fellows for their Wayne/Fellows production company.
Jonathan Kellerman (born August 9, 1949) is an American psychologist, and Edgar and Anthony Award-winning author of numerous bestselling suspense novels.
When the Bough Breaks is a 1986 television film directed by Waris Hussein and starring Ted Danson.
 The screenplay by Phil Penningroth was adapted from a 1985 novel by Jonathan Kellerman, also titled "When the Bough Breaks".
 Danson, who also co-produced, plays the crime-solving forensic psychologist Alex Delaware, a character who appears in a series of novels by Kellerman.
Walter Van Tilburg Clark (August 3, 1909 – November 10, 1971) was an American novelist, short story writer, and educator.
 He ranks as one of Nevada's most distinguished literary figures of the 20th century, and was the first inductee into the 'Nevada Writers Hall of Fame' in 1988.
 Two of his novels, "The Ox-Bow Incident" and "The Track of the Cat," were made into films.
 As a writer, Clark taught himself to use the familiar materials of the western saga to explore the human psyche and to raise deep philosophical issues.
Alex Delaware is a literary character created by Jonathan Kellerman.
 The Alex Delaware detective series begins with "When the Bough Breaks", published in 1985.
 Delaware appears in 32 of Kellerman's popular murder mysteries.
 Kellerman sets the series in Los Angeles.
 Delaware is a forensic psychologist; although Kellerman writes a back story in which Delaware practiced as a child psychologist.
The Ox-Bow Incident is a 1940 western novel by Walter Van Tilburg Clark in which two drifters are drawn into a lynch mob to find and hang three men presumed to be rustlers and the killers of a local man.
Survival of the Fittest is the thirteenth novel by Jonathan Kellerman and is told through the first person point of view of Kellerman's main character, Dr. Alex Delaware.
 LAPD Detective Milo Sturgis has asked Alex to help him with another whodunit.
 It reached number two in the New York Times Best Seller list for paperbacks.
Jesse Oren Kellerman (born September 1, 1978) is an American novelist and playwright.
 He has published the novels: "Sunstroke" (2006), "Trouble" (2007), "The Genius" (2008), "The Executor" (2010), "I'll Catch You" (2012), and with his father, Jonathan Kellerman, "The Golem of Hollywood" (2014).
 For his play, "Things Beyond Our Control" (2004) he was honored with a Princess Grace Award, which recognizes emerging talent in theater, dance, and film in the U.S.