The Prose Edda · Part 3
Skáldskaparmál 27
27.1"How should the wind be periphrased? Thus: call it Son of Fornjótr, Brother of the Sea and of Fire, Scathe or Ruin or Hound or Wolf of the Wood or of the Sail or of the Rigging.
27.2Thus spake Sveinn in the Nordrsetu-drápa: First began to fly Fornjótr's sons ill-shapen.