Orcneas

Orcneas are a fictional species mentioned in Beowulf.

Description
Orcneas are cited as relatives of Ogres and Elves. The term is recorded nowhere else, and there are two interpretations of it.

Ghouls
The first etymology for 'orcneas' is that it is a portmanteau of "Orc" and "neas", meaning corpse. This would define the Orcneas as some kind of undead monsters, possibly similar to some versions of Ghouls.

Sea Monsters
However, another etymology ties it to 'orcen', another Old English world that appears to design a sea monster of some kind.

Trivia
If the first interpretation is indeed correct, Orcneas are the first recorded version of Orcs in written material.