It appears from the northern chronicles that in the first century of the Christian Era, Sigge, the chief of the Aser, an Asiatic tribe, emigrated from the Caspian sea and the Caucasus into northern Europe. He directed his course northwesterly from the Black sea to Russia, over which, according to tradition, he placed one of his sons as a ruler, as he is said to have done over the Saxons and the Franks. He then advanced through Cimbria to Denmark, which acknowledged his fifth son Skiold as its sovereign, and passed over to Sweden, where Gylf, who did homage to the wonderful stranger, and was initiated into his mysteries, then ruled. He soon made himself master here, built Sigtuna as the capital of his empire, and promulgated a new code of laws, and established the sacred mysteries. He, himself, assumed the name of Odin, founded the priesthood of the twelve Drottars (Druids?) who conducted the secret worship, and the administration of justice, and, as prophets, revealed the future. The secret rites of these mysteries celebrated the death of Balder, the beautiful and lovely, and represented the grief of Gods and men at his death, and his restoration to life." (General History of Freemasonry.)
After his death, the historical Odin was apotheosized, his identity being merged into that of the mythological Odin, god of wisdom, whose cult he had promulgated. Odinism then supplanted the worship of Thor, the thunderer, the supreme deity of the ancient Scandinavian pantheon. The mound where, according to legend, King Odin was buried is still to be seen near the site of his great temple at Upsala.
The Secret Teachings of All Ages-Manly P. Hall (book)