The Hyborian Age is an essay by Robert E. Howard pertaining to the Hyborian Age, the fictional setting of his stories about Conan the Cimmerian. It was written in the 1930s but not published during Howard's lifetime. Its purpose was to maintain consistency within his fictional setting.
It sets out in detail the major events of the prehistorical period, before and after the time of the Conan stories. In describing the cataclysmic end of the Thurian Age, the period described in his Kull stories, Howard linked both sequences of stories into one shared universe. Other stories would establish links to real life as well - The Haunter of the Ring, set in the modern age, contains a Hyborian artifact, and Kings of the Night brings King Kull forward in time to fight the Roman legions.
This essay also sets out the racial and geographical heritage of the fictional peoples and countries of the Age. For example, how the Gaels were descended from Howard's Cimmerians.
Howard's only Conan novel, The Hour of the Dragon, expands upon the history of the world presented in this essay by introducing a new ancient empire called Acheron that had ruled the Hyborian kingdoms in the past.
The Hyborian Age is a fictional period within the artificial mythology created by Robert E. Howard, in which the sword and sorcery tales of Conan the Barbarian are set.
The word "Hyborian" is derived from the legendary northern land of the ancient Greeks, Hyperborea, and is rendered as such in the earliest draft of Howard's essay "The Hyborian Age." Howard described the Hyborian Age taking place sometime after the sinking of Atlantis and before the beginning of recorded history. Most later editors and adaptors such as L. Sprague de Camp and Roy Thomas placed the Hyborian Age around 10,000 B.C. More recently, Dale Rippke proposed that the Hyborian Age should be placed further in the past, around 32,500 B.C., prior to the beginning of the last ice age. Rippke's date, however, has since been disputed by Jeffrey Shanks who argues for the more traditional placement at the end of the ice age.
The reasons behind the invention of the Hyborian Age were perhaps commercial: Howard had an intense love for history and historical dramas; however, at the same time, he recognized the difficulties and the time-consuming research needed in maintaining historical accuracy. By conceiving a timeless setting – a vanished age – and by carefully choosing names that resembled our history, Howard avoided the problem of historical anachronisms and the need for lengthy exposition.