Findis and Irimë were Elves, daughters of Finwë, High King of the Noldor and Indis; sisters of Fingolfin and Finarfin and half-sisters of Fëanor. Findis was the first child of Finwë and Indis, and Irimë was the third one. Little is known about them except that Findis stayed with Indis and Finarfin in Valinor, while Irimë went to Middle-earth with Fingolfin. Findis is a combination of her parents' names. Irimë's mother-name was Lalwendë or in shortened form Lalwen, and by this name she was generally known. In some versions Irimë is called Irien which may have been her father-name.
Findis apparently still dwells in Aman. Irimë's fate is unknown, but she may have been slain or returned to Valinor after the Dagor Bragollach ("Battle of Sudden Flame"). Neither appear in the published The Silmarillion.
Other Versions of the Legendarium
In earlier versions of the legendarium, Finwë and Indis had three daughters, Findis, Faniel and Finvain. It remains unclear if the third daughter survived in the final conception of Finwë's family tree.