Orodreth

In the fiction of J. R. R. Tolkien, Orodreth was an Elf of the First Age, the second son of Finarfin and younger brother of Finrod Felagund, and a ruler of Nargothrond.

Warning: Wikipedia contains spoilers

When Finrod died at the hands of Sauron, Orodreth ruled Nargothrond.

Orodreth was the father of Finduilas[?], and later died fighting the hosts of Morgoth in the Battle of Tumhalad[?].