Place in the Antediluvian Line
According to Genesis 5:9-14, Cainan was born when his father Enos was ninety years old. He fathered Mahalaleel at the age of seventy, afterward had further sons and daughters, and lived a total of nine hundred and ten years. Through his son Mahalaleel the line continued to Jared, Enoch, Methuselah, Lamech, and Noah.
He thus stands in the fourth generation from Adam by way of Seth, within the line that Scripture sets apart from the descendants of Cain. The genealogy is the whole of what the biblical text preserves concerning him: his parentage, the age at which he became a father, that he had other children, and the length of his life.