Amarië

Amarië, a Vanyarin Elf who didn't follow Finrod to Middle-earth. She and Finrod were betrothed, and Finrod never married while in Middle-earth. It is noted in the Lay of Leithian that Finrod was soon allowed to return to life in Valinor, and "now dwells with Amarië", so they probably were wed later - but there is no such information in the Silmarillion.