Legally speaking, direct or collateral blood relatives within three generations are forbidden to get married, regardless of whether the third generation is included or not. Cousins, grandparents of th

Legally speaking, direct or collateral blood relatives within three generations are forbidden to get married, regardless of whether the third generation is included or not. Cousins, grandparents of the same parents, can they get married? Of course, it also includes the third generation. Article 7 of the Marriage Law stipulates that marriage is prohibited if lineal blood relatives demand it or collateral blood relatives demand it within three generations. That is, between father and daughter, between mother and child, between other lineal blood relatives, between brothers and sisters, between cousins, between uncles, between uncles and aunts, marriage is not allowed.