Myths of the Norsemen From the Eddas and Sagas
Page: 72As snowshoes are shaped like a shield, and as the ice with which he yearly enveloped the earth acts as a shield to protect it from harm during the winter, Uller was surnamed the shield-god, and he was specially invoked by all persons about to engage in a duel or in a desperate fight.
In Christian times, his place in popular worship was taken by St. Hubert, the hunter, who, also, was made patron of the first month of the year, which began on November 22, and was dedicated to him as the sun passed through the constellation of Sagittarius, the bowman.
In Anglo-Saxon, Uller was known as Vulder; but in some parts of Germany he was called Holler and considered to be the husband of the fair goddess Holda, whose fields he covered with a thick mantle of snow, to make them more fruitful when the spring came.
By the Scandinavians, Uller was said to have married Skadi, Niörd’s divorced wife, the female personification of winter and cold, and their tastes were so congenial that they lived in perfect harmony together. 
Worship of Uller
Numerous temples were dedicated to Uller in the North, and on his altars, as well as on those of all the other gods, lay a sacred ring upon which oaths were sworn. This ring was said to have the power of shrinking so violently as to sever the finger of any premeditated perjurer. The people visited Uller’s shrine, especially during the months of November and December, to entreat him to send a thick covering of snow over their lands, as earnest of a good harvest; and as he was supposed to send out the glorious flashes of the aurora borealis, which illumine the Northern sky during its long night, he was considered nearly akin to Balder, the personification of light.
According to other authorities, Uller was Balder’s special friend, principally because he too spent part of the year in the dismal depths of Nifl-heim, with Hel, the goddess of death. Uller was supposed to endure a yearly banishment thither, during the summer months, when he was forced to resign his sway over the earth to Odin, the summer god, and there Balder came to join him at Midsummer, the date of his disappearance from Asgard, for then the days began to grow shorter, and the rule of light (Balder) gradually yielded to the ever encroaching power of darkness (Hodur). 
Chapter XII: Forseti
The God of Justice and Truth
Son of Balder, god of light, and of Nanna, goddess of immaculate purity, Forseti was the wisest, most eloquent, and most gentle of all the gods. When his presence in Asgard became known, the gods awarded him a seat in the council hall, decreed that he should be patron of justice and righteousness, and gave him as abode the radiant palace Glitnir. This dwelling had a silver roof, supported on pillars of gold, and it shone so brightly that it could be seen from a great distance.