The Skandinavian version of the Siegfried legend has been handed down to us in five different forms. The first of these is the poetic or older "Edda", also called Saemund's "Edda", as it was assigned to the celebrated Icelandic scholar Saemundr Sigfusson. The "Codex Regius", in which it is preserved, dates from the middle of the thirteenth century, but is probably a copy of an older manuscript. The songs it contains were written at various times, the oldest probably in the first half of the ninth century, the latest not much before the date of the earliest manuscript. Most of them, however, belong to the Viking period, when Christianity was already beginning to influence the Norwegians, that is, between the years 800 and 1000. They are partly heroic, partly mythological in character, and are written in alliterative strophes interspersed with prose, and have the form of dialogues. Though the legends on which these songs are based were brought from Norway, most of them were probably composed in Iceland. Among these songs, now, we find a number which deal with the adventures of Siegfried and his tragic end. The second source of the Siegfried story is the so-called "Volsungasaga", a prose paraphrase of the "Edda" songs. The MS. dates from the beginning of the thirteenth century, but the account was probably written a century earlier. The adventures of Siegfried and his ancestors are here related in great detail and his ancestry traced back to Wodan. Although a secondary source, as it is based on the "Edda", the "Volsungasaga" is nevertheless of great importance, since it supplies a portion of the "Codex Regius" which has been lost, and thus furnishes us with the contents of the missing songs. The third source is the prose "Edda", sometimes called the "Snorra Edda", after the famous Icelander Snorri Sturluson (1178-1241), to whom it was ascribed. The author was acquainted with both the poetic "Edda" and the "Volsungasaga", and follows these accounts closely. The younger "Edda" is not really a tale, but a book of poetics; it relates, however, the Siegfried saga briefly. It is considered an original source, since it evidently made use of songs that have not come down to us, especially in the account of the origin of the treasure, which is here told more in detail and with considerable differences. The "Nornagestsaga" or "Nornageststhattr", the story of "Nornagest", forms the fourth source of the Siegfried story. It is really a part of the Olaf saga, but contains the story of Sigurd and Gunnar (the Norse forms of Siegfried and Gunther), which an old man Nornagest relates to King Olaf Tryggvason, who converted the Norwegians to Christianity. The story was written about 1250 to illustrate the transition from heathendom to the Christian faith. It is based on the "Edda" and the "Volsungasaga", and is therefore of minor importance as a source.