A Sindarin elf born in the latter part of the first age (F.A.430 approx.), named Mirluin for her sparkling sapphire blue eyes as a babe, born and raised in the safety of Menegroth, after the slaughter of her parents during the ruin of Doriath she fled over the mountains of Ered Lindon at the tender age of seventy, not yet come into her power and saw nothing of the war of wrath.

When the first age ended she remained at newly founded Mithlond working as scribe, cartographer and jeweller remapping what remained of Beleriand, Forlindon and Harlindon until word of a great tutor was heard teaching in Eregion, (S.A.1500 approx)
As a Master Jeweller, she travelled to the Noldorin holding of Ost-in-Edhil  joining the Gwaith-i-Mírdain and studied under the tutelage of Annatar 'gift giver'  amongst others.
When Annatar showed his true form, she fled back to Mithlond with the intention of crossing the sea, but Lord Gil-Galad persuaded her to remain and use her learned skills against the might of the dark lord,  and took part in the war of Elves and Sauron and again during the last alliance and the Battle of Dagorlad that marked the end of the second age.

Mirluin has spent much of the Third Age collecting old texts of ring lore, as much of which was lost with the destruction of Eregion, and can be found poring over old musty libraries in the faint hope of another piece of the puzzle trying to find a connection between her own knowledge from that time and that of the Master ring.

Mirluin wearies of the failings of elves and men (6,600+ years) and is only waiting for the final war to come, and then she can make the final journey across the sea, into the west.