Sorry, in a rush, perhaps I'll stealthily edit later.
Edit: I really recommend This, of course, applied to men as well as women and started from a relatively young age (early teens).
While pre-marital sex was fairly common, after marriage there was an expectation that sex would remain within the confines of the marriage.
But, as Snorri said, there was usually no mechanism of punishing either party if they went outside the marriage, except divorce which was readily available for either partner (though women were said to fight more fiercely if some extraneous lover tried to steal her husband away).
The Cherokee people were divided into 7 clans: "Wild Potato" "Long Hair" "Deer" "Blue" "Wolf" "Bird" and "Paint." Every village was made up of representatives and households from each of these 7 clans.