The prohibition does not extend to cognatic relationship, but a man must not marry into the family of his paternal aunt.
Here again it will be convenient to employ the Roman terms, Agnatic and cognatic relationship.
The former case offends against the principle of agnatic organisation, the latter against the cognatic.
This story seems to imply that cognatic organisation survived in Locris down to the beginning of the seventh century.
This state of things however points to the prevalence of a cognatic organisation of society.
The most elementary of these groups is the maegth, the association of agnatic and cognatic relations.