Thjalfi and Roskva

In Norse mythology, Þjálfi (Thjálfi in English orthography) and Röskva are two siblings, male and female respectively, who are servants of the god Thor. Þjálfi receives a single mention in the Poetic Edda, compiled in the 13th century from earlier traditional material, while both Þjálfi and Röskva are attested in the Prose Edda, written in the 13th century by Snorri Sturluson and in poetry of skalds. In the Poetic Edda, Thor recounts an incident where Þjálfi is chased away by she-wolves but gives no additional information about him.