Proper noun
(biblical, Torah) Either of two antediluvians.
The third-great-grandson of Cain.
The father of Noah.
Source: en.wiktionary.orgLamech not only violated God’s design for monogamous marriage by taking two wives, but he was also a violent man who killed a young man for striking him. Source: Internet
There is a reason for this-- Jesus is inaugurating a new covenant and the Mosaic rules are now seen as obsolete, even the ones in Genesis 9. Notice again the contrast between Lamech and what Jesus says about forgiveness in Mt. 18. Source: Internet
His father was Lamech and his mother is unknown. Source: Internet