Starting from the common ancestor, the common ancestor is the first generation, the children of the common ancestor are the second generation, and the children born to the common ancestor belong to the third generation. Individuals within these three generations who engage in intermarriage with each other are considered to be consanguineous marriages.
1、 Calculation method for three generations of consanguineous marriage
Consanguineous marriage refers to intermarriage between direct blood relatives or collateral blood relatives within three generations, that is, people with a common ancestor within three generations intermarry. For example, when cousins get married, their maternal grandparents are the common ancestor and belong to the first generation, their mothers belong to the second generation, and when cousins get married, they belong to the third generation. This situation is considered consanguineous marriage.
2、 Prohibition of Marriage
1. Those who have not reached the legal age for marriage.
2. Not voluntarily agreed upon by both parties.
3. One or both parties already have spouses.
4. Belonging to direct blood relatives or collateral blood relatives within three generations.
5. Suffering from diseases that are medically considered unsuitable for marriage.