The Ages of the Children of Ilúvatar chronicle major events in the history of the Eruhíni. The First Age of the Children of Ilúvatar began during the Years of the Trees when the Elves awoke at Cuiviénen. This marked the start of the years when the Children of Ilúvatar were active in Middle-earth. Later in the First Age the second kindred, humans, and Ilúvatar's adopted children, the Dwarves, also awoke.