The "Younger Eddas of Snorre Sturleson" also known as the "Prose Edda" is believed to have been put together by the Icelandic poet, politician, and historian Snorri Sturluson in the 14th Century and consists of a Christian's interpretation of the origins of Nordic mythology. The Prose Edda is related to the Poetic Edda in that the Prose Edda cites various poems collected in the Poetic Edda as sources. The two Eddas are the most important extant sources on Norse mythology and Germanic heroic legends, and from the early 19th century onwards have had a powerful influence on later Scandinavian literatures. Poets who have acknowledged their debt to the Poetic Edda include Vilhelm Ekelund, August Strindberg, J.R.R. Tolkien, Ezra Pound and Karin Boye.