Among the Igbo speaking people of the western Niger, known as Enuani people, predominantly in Delta State, Nigeria, kinship relationship is regarded as very sacred. It is upon the tenets of kinship that marriage is contracted whether in ancient or contemporary society.
The people hold such relationships with very high regard. Family is family and there is no such word as half-brother or extended family. Also, all male relatives are regarded as "nwanne" brother as well as all female relatives are regarded as sister.

Genrally, there are two main types of kinship relationship recognized in Ubulu-Uku Kingdom

1. Affinity kinship relationship
2. Consanguinity kinship relationship

1. AFFINITY KINSHIP RELATIONSHIP
This relationship is brought about by marriage between two families. They maintain a cordial social relationship as "Ọgọ" In-laws. The lineages involved can intermarry. However, the offspring of the immediate family who are in a marital union with the other lineage cannot intermarry. No family from the entire lineage where the wife is married from can marry any of her offspring. This culture is maintained till the next F3, third filial generation. 

2. CONSANGUINITY KINSHIP RELATIONSHIP
This relationship results from birth. It is a blood relationship that is taken very sacrosanct in Ubulu Culture. Relationship by birth is viewed from four different parental genetic pedigrees. “Ebo anọ we si abia enu” the four lineages of birth. But in general, the birth of a child can be traced to about seven parental genetic blood lines. Marital relationship is not permitted among natives who are related by consanguinity, unless it has passed F3, the third filial generation, which is referred in Ubulu language as “Ụkwata Atọ”. Below are the parental pedigrees according to their order of importance.

THE PATRILINEAL (EBO’E NADI)
This is the child’s paternal lineage, the lineage where the child is born into. Here, the child is entitled to an inheritance as patrimony. The child will not go into any marital or sexual relationship with any member of this lineage or any other lineage who are led by the same “ọfọ” traditional staff of authority, with his lineage. Neither will the child be allowed to have any marital or sexual relationship with the children, grandchildren or great grandchildren of any woman married from that lineage to another lineage.
Also, if the child is male, he will lead the lineage as Diokpa by gerontocracy, if he lives old enough. If the child is female, she will lead the female folks as Ada, by gerontocracy. Note that; if the child is born to an idegbe, or Nwunye Okposho, that child is considered to be in his/her patrilineal home. An idegbe is a woman who was kept at home because her father had not a male child. She would seek a partner and raise children in her father’s name. Her children will all be regarded as fully born into the lineage.  

MATRILINEAL (EBO’E NEE) 
This is the lineage where the mother of the child was married from. The lineage is nearly as important as the patrilineal. If the patrilineal home is unfavorable, the child can return to this lineage and be welcomed to live among them. There will not be any sexual or marital relationship between such person and anyone related to via the matrilineal as we have discussed in the patrilineal. If the child is male, he will not be allowed to lead the lineage by gerontocracy. He will be preceded by four men younger than his age. This also is applicable to when the sex of the child is female. This is so because such people are said to inhabit in their left hand. 

THE PATERNAL GRANDMOTHER (EBO’E NEE NADI) 
This is the lineage where the paternal grandmother was married from. There will not be allowed any sexual or marital relationship between the child and anyone related to that lineage by less than two traceable generations and all the lineages which are under the same offor as them. The child can live with such people but will have no inheritance among them.

THE MATERNAL GRANDMOTHER (EBO NEE NNE) 

This is the lineage where the maternal grandmother was married from. The child will not be allowed to have any sexual or marital union with anyone related to that family by one generation. It is rare but that person can live in this kindred. There will not be any inheritance for him/her among them.
These are the four basic lineages to be considered as “Ebo Anọ we si abia enu” the four filial generations of life.
Other lineages not mentioned are; Paternal grandfather's mothers’ lineage and matrilineal grandfathers’s mother's lineage. These ones are beyond the recognized four and can be severed to allow marital relationship.

How can consanguinity relationship be severed?

To be continued...