Many scholars have for sure that the old nordic societies, and irish and picts, had a lack of incest regulations. I know about some marriages between grandparents and grandaughters, a queen with his son, siblings, etc (sagas, eddas). But my interest is to look after some structure of incest repeated in time, that it's: if it exists one structure of avoiding incest, it may be another structure of incest. Someone there con help me to know genealogies of sagas and eddas? Thak you.