There are at least two people in the Bible named Enoch. One was the son of Cain and the other was the son of Jared.
Enoch, the son of Jared, was the father of Methuselah. Enoch was 65 years old when he became the father of Methuselah, and lived another 300 years, and had other sons and daughters. "Then Enoch walked with God, and he was no longer here, for God took him" (Gen. 5:21-24). In Hebrews 11:5, it states, "Enoch was taken up so that he should not see death" because his faith was pleasing to God.
The other Enoch was born to Cain, after Cain had killed his brother Abel. Cain later established a settlement and named it after Enoch. (Genesis 4:1-17).