Note 3 — Chapter III · THE GENTILE SYSTEM.
Reading edition
Nikie names are those referring to a mythical ancestor, to some part of his body, to some of his acts, or to some ancient rite which may have been established by him. Nikie names are of several kinds, (a.) The seven birth names for each sex. (b.) Other nikie names, not birth names, but peculiar to a single gens. (c.) Names common to two or more gentes. There are two explanations of the last case. All the gentes using the same name may have had a common mythical ancestor or a mythical ancestor of the same species or genus. Among the Osages and Kansas there are gentes that exchange names; and it is probable that the custom has existed among the Omahas. Some of these gentes that exchange names are those which have the same sacred songs.
The following law about nikie names has been observed by the Omahas:
There must never be more than one person in a gens bearing any particular male name.