 Valkyries are attested in the "Poetic Edda" (a book of poems compiled in the 13th century from earlier traditional sources), the "Prose Edda", the (both by Snorri Sturluson) and the (one of the Sagas of Icelanders), all written—or compiled—in the 13th century.They appear throughout the poetry of skalds, in a 14th-century charm, and in various runic inscriptions.The Old English cognate terms and appear in several Old English manuscripts, and scholars have explored whether the terms appear in Old English by way of Norse influence, or reflect a tradition also native among the Anglo-Saxon pagans.