Figure 66: Matrilateral Cross Cousin Marriage

Members of four different lineages intermarry.
No cousin rule is applied.

The matrilateral cross cousin marriage rule is applied:
A man marries his mother's brother's daughter, his matrilateral cross cousin. If this rule is applied consistently to everyone, the pattern of lineage intermarriage established in the previous generation is duplicated exactly.

An reapplication of the matrilateral cross cousin marriage rule in the third generation continues the exchanges of the previous generation.