As the above will show, there is a real difficulty in reconciling the historical statements as to the worship of Odin and Thor with the relative positions assigned to them in the old mythology. The explanation which seems to clear away this difficulty in the most satisfactory manner is the suggestion that Thor and Odin really belong to different stages in the development of Scandinavian religion. On this view Thor was originally the chief god, and to a certain extent continued to hold this position to the end. His supremacy, however, was in the later period of heathenism seriously threatened by the growing cult of Odin, which was at first foreign to the Scandinavian peoples, and was received by them from the South Germanic races. This would easily account for the seemingly greater popularity of Odin among the Danes and Swedes than among the Norwegians and Icelanders, to whom the new cult would be later in spreading. In this connection it may be noted that some of the poetic names for Odin, such as 'the friend of the Gauts,' 'Tyr of the Gauts' (as well as the simple _Gauti_ and _Gautr_), appear to indicate that his worship was associated with the people of that name in southern Sweden. It was in Gautland that the poet Hallfred was nearly sacrificed to Odin in 997, and here also in 1018 the poet Sigvat was refused admission to a farm where a sacrifice was taking place, because they 'were afraid of Odin's anger.' It may even be significant that Earl Hákon's sacrifice already mentioned was performed on the coast of Gautland.