here somethings that I found about this fire emblem, if you find some more I would like you post them

Gilliam
the name of an old gentleman that existed in the Middle Ages.

Seth
the name of a god.

Tethys
the name of one of the first seas of Earth millions of years ago.

Carcino
The carcinogenicity is a mythological creature with a crab that lived in the seas.

Knoll
A type of construction, a mound.

Fado (Vari)
A garment that bears the king himself

Excalibur
King Arthur's sword

Fenrir
Name of a beast of Norse mythology

Fimbulvetr
Eternal winter in the Norse

Nosferatu
A vampire

Gleipnir
The chain which was trapped Fenrir, according to mythology.

Garm
Another beast of Norse mythology

Vidofnir
Gallo of Norse mythology (or something like that)

Nidhogg
Mythological dragon

Naglfar
In Norse mythology, ship made with the nails of the dead.

Audhulma
In Norse mythology, the first cow(yeah a cow xD). It was created in the beginning of time by the melting ice of a mountain called Niflheim.