Alvarwyn was born in Dale to a local woman and a descendent of rangers that had moved east from Arnor in the failing years of the northern kindom. While quite removed from the blood of Numenor, the girl was raised on stories of the past and trained in woodcraft, swordplay, and, what would become her favorite past time, falconry by her father. While never held with disdain (quite the opposite - Alva grew up loved and doted upon by her father) it was obvious that the man had hoped for a son and was instead given a sole daughter to inherit his spirit and teachings, though Alva never quite seemed to notice nor care. Taking to the lifestyle that was half forced upon her with relish, she came to adore fire side stories with her father of the glories of old and tended to frequent play with the young boys about her homestead - playing soldier or wrestling and the like - more so than with the girls.

As she neared adulthood she had hoped to serve in the militia with her father, given the dirge of strong men to fill their ranks as the final war of the Third Age began to reach its climax, but in a fateful moment Alva was sent west to Evendim to stay with an 'uncle' after her mother took ill and began to waste away. Whether it was some foresight on her father's part, or a simple means of sparing the girl a burden, at some 14 years old Alvarwyn took up abode with the rangers keeping watch of Annuminas, leaving Dale and having yet to return.

Treated no different from other young rangers, she quickly grew into her stride and bore the burden with grace and dignity whilst serving in all manners of roles from scribe or cook to sentry duty. Though she was never permitted to take part in some of the bolder actions about Annúminas she did find the opportunity to put her sword play to the test and was not found wanting and in 3019 when the Grey Company was assembled she had hoped to join them but was deemed too young and inexperienced.

Taking some slight to her dismissal but understanding her place, Alvarwyn maintained her station in Evendim until about the time King Elessar was crowned when word finally reached her from home that her mother had died some years prior and her father had fallen defending their home from marauding wargs and goblins. It was then that she decided she had to take a more active role in her life and the fate of the kingdom she had never seen but beheld only in her dreams and departed to forge her own way in hopes of returning to Annúminas triumphant to restore the city.