Born in early-TA 2950, Elladrien was raised in Annúminas, the capital city of the Kingdom of Arnor. Like her parents and other relatives, Elladrien wanted to become a Ranger of the North, but her father forbid that since he was afraid of what would happen to her. Later in TA 2970, Elladrien met a strong and proud woman named Maia, who was also a ranger and the adopted sister of Halbarad Dúnadan. Despite her father's warnings, Elladrien was eager to learn how to become a Ranger. Maia saw courage in her eyes, and agreed to train her. Every early morning while her father was away from Annúminas, Elladrien would accompany Maia, and the two would train together in the forests.