Genesis 4:17-18 RSV

17 Cain knew his wife, and she conceived and bore Enoch; and he built a city, and called the name of the city after the name of his son, Enoch.
18 To Enoch was born Irad; and Irad was the father of Me-hu'ja-el, and Me-hu'ja-el the father of Me-thu'sha-el, and Me-thu'sha-el the father of Lamech.