The Sky People were divided into 9 clans and the Earth People into 15 clans.

"Each clan was divided into sub-clans, each in turn associated with some particular life symbol of the clan and called by reference to this life symbol. There was some ranking of sub-clans and they frequently differed in their ritual significance. One sub-clan in each clan was designated as the "Sho-kah" sub-clan whose members acted as the official messengers for the clan. Clan membership was of great significance in that an individual was Osage by virtue of membership in a clan. Each clan had its own set of personal names usually, but not always, a reference to one of the clans life symbols. Also, each clan had its own specific ritual in which a clan name was given to each individual. "

"Clan membership regulated marriage. A person had to marry a member of one of the other or opposing moieties. A member of one of the nine Sky clans had to marry a member of one of the fifteen Earth clans and vise versa. Just like all life was the product of the interaction between the sky and the earth, so every Osage child was the product of a union of the Sky People and the Earth People. "

I wonder what side the married couple was in? By the wife? By the husband?