This timeline of major events attempts to lay out the most important points in the history of Westeros and Essos, based on dates and information given in the novels and supporting material
According to tradition, the known history of Westeros extends back over 12,000 years. However, the oldest historic recounts in Westeros were written after the Andals’ arrival to the continent, as the First Men used runes for carving on stone. Everything written about the Age of Heroes, the Dawn Age, and the Long Night originates from stories written down by septons thousands of years later. The accuracy of the legends and myths that recount much of this history is openly questioned by the maesters of the Citadel, amongst others.