Did this Elf ever go to Valinor? No
Is it a noldo? No
Did said elf have children? Not, that I kow.
Did this Elf participate in any major battles? Yes
Was this elf a member of a ruling family? No
was the elf a ruler of a specific area? No
So our mystery male Elf died before the Second Age...hmmm...Finrod? No
If not, is he of the Sindar? Yes, it's a grey one
Was he of the house of Finwe? No
And now it should be easy...