Was born in Tirion, in a family which belonged to the people of Fëanor. Father was a hunter, mother—a smith, and so to say jack-of-all-trades, in a positive connotation. Issë had an elder sister too, named Ringaren, and sisters were so similar that sometimes Issë was called after her: Ringë. Though it is an epessë, used only by relatives and close friends.

During the Flight of the Noldor, father and Ringaren remained in Valinor, but Issetirnë and her mother, as well as one of her dearest friends Narenildo, went to Middle-earth after their Lord.

After the death of Fëanor Issë joined the people of Maglor and lived in Himring for a while, though travelled a lot around Beleriand. In the beginning of the Second Age she moved to Eregion, considering Celebrimbor the Lord after the death of Maglor, and studied weaponsmithing lore there. Her teacher and a close friend was Eldring the Star-hammer, whose fate remains unknown to her now.

Survived the fall of Eregion and after moved to Lindon, but soon started travelling again without a special purpose. Lately, she started returning to Eregion again and again; it seems like there is something in her past that she is not ready to say farewell to yet...