Nordic and Nautical, he is in charge of Fire, Wind and Sea.
He didn’t start off that way. Back in the mists of pre-Norse paganism he was apparently a female goddess of Fertility known as NERTHUS. (Although some claim she was really his sister or even a part-time hermaphrodite. Perhaps they just fancied a swap now and again.)
After being chosen by the Goddess SKADI in a footsie contest, things didn’t work out, and he found his sister much more compatible. With her he produced a whole boatload of deities, including FREYA and FREYR.