The Prose Edda 2.7

"How should one periphrase Freyr? Thus: by calling him Son of Njördr, Brother of Freyja, and also God of Vanir, and Kinsman of the Vanir, and Wane, and God of the Fertile Season, and God of Wealth-Gifts.

Thus sang Egill Skallagrímsson:

For that Grjótbjörn In goods and gear Freyr and Njördr Have fairly blessed.

Freyr is called Adversary of Beli, even as Eyvindr Spoiler of Skalds sang:

When the Earl's foe Wished to inhabit The outer bounds Of Beli's hater.

He is the possessor of Skídbladnir and of that boar which is called Gold-Bristle, even as it is told here:

Ívaldi's offspring In ancient days Went to shape Skídbladnir, Foremost of ships, Fairly for Freyr, Choicely for Njördr's child.

Thus speaks Úlfr Uggason:

The battle-bold Freyr rideth First on the golden-bristled Barrow-boar to the bale-fire Of Baldr, and leads the people.

The boar is also called Fearful-Tusk.