Beowulf is a heroic saga, or poem, written between AD700 and AD750 and is set during the 6th century. The boar symbol on the crest of helmets is mentioned numerous times:
With its sharp edges shining with blood,
Through the boars that bristle above the foes’ helmets!
But also in other areas, particularly decorating the cheeks:
Over the cheek pieces
Boar-shapes shone out, bristling with gold,
Blazing and fire-hard, fierce guards
Of their bearers’ lives.
It also expresses that the boar was a symbol of protection a ferocity:
His head was encircled by a silver helmet
That was to strike down through the swirl of water
Disturb the depths. Adorned with treasure,
Clasped with royal bands, it was right as at first
When the weapon-smith had wonderfully made it,
So that no sword should afterward be able to cut through
The defending wild boars that faced about it.