Mithanor, (meaning Pale Grey Sun) Idhrenhên (name given by her father meaning "Thoughtful child"). Meliuhiril (name given by her husband at the day of their union, meaning "Perfect Lady") Silvan Elf, born on the third day of June, year 1766 of the Third Age (calendar of Men) in Lothlórien. Daughter of Herendil and Alvoneth, sister of Melien and Celveth.  

Mithanor spent her younger days playing beneath the Golden Mallorn-trees of Lothlórien, learning about nature and caring for the creations of Yavanna Kementári, the Fruit-giver. Being brought up to love all that is living and blossoming, Mithanor accuired a kind and loving heart.  Shy, as she has been ever since her first breath, she early learned the art of writing and turned into a poet, writing stories based on her life and thoughts and prayers to Yavanna and Elbereth, the Valar-favoured.

Not soon after the death of Melien, glandir of Lórien, her parents decided to leave Middle-Earth and sail to the Undying Lands. Mithanor was to stay behind, in the care of her older brother Celveth. As the years of the mortals passed, Celveth came to marry Lineth, Elf-maiden of Celondim, and thus, Mithanor accompanied her brother and dwelled there for many a year.

Celveth and Lineth later on took the decision to leave Middle-Earth and sail, just as their mothers and fathers before them. Mithanor stayed behind, not ready to make the journey across the wide Sea. Her heart was discouraged and her mind set in thought, as she was now all alone in this World, without a family to call her own. She dwelled for yet some time in Celondim, before returning to her beloved Lothlórien once more.