I've had a very busy weekend, starting with Friday, but now I finally have time for something sophisticated:) Actually, I have been thinking of writing this post for a couple of years, so here comes.
Our Viking ancestors had an interesting theory about the origin of social classes. According to it, Heimdall, one of Odin's sons, decided one day to visit Earth and to find out what men were up to. Right upon his arrival Heimdall, who called himself Riger for the occasion, stumbled upon a hut where he met a very old (and dirt poor) couple by the names of Ai (great-grandfather) and Edda (great-grandmother). They offered him hospitality and Riger spent three days with them.
After his departure, Edda became the mother of a son called Thrall who had an inclination for all sorts of hard physical labour and as he grew up he married Thyr, a rather heavily built girl with flat feet who had the same hobby, doing heavy physical work. They became the parents of all the servants of the North.
Riger in the meanwhile travelled further and met a middle-aged couple who owned a nice farm, Afi (grandfather) and Amma (grandmother); who invited him to stay with them and share their simple but abundant meal. He spent three days with the couple, taught them a lot of things and left. After his departure, well, you know, they got a blue-eyed boy whom they called Karl and who showed an enormous knowledge of agriculture. Later Karl married Snor, a girl who was a capable housekeeper and who became the mother of all the free landowners of the North.
Riger went further on and came upon a castle. In the castle lived Fadir (father) and Modir (mother), a well-dressed, well-fed couple who offered their visitor a sophisticated meal and expensive wines. Riger stayed three days with them, also, and returned to Asgard to watch over the bridge there, and the lady of the castle got a handsome son whose name was Jarl.
The child showed an early interest in hunting, weapons and all sort of things to do with war, learned the runes and through his courage brought glory to his family. He married Erna, a slender, aristocratic girl who presided over his household with wisdom and bore him many children, all destined to rule. His youngest son became the first king of Denmark.
And that's how we've got different social classes.
Source: Noorsche Mythen by H.A. Guerber