>>19262166 PB
Eve also had Seth after Cain murdered Abel.
Seth is named because Jesus, the Promised Messiah, would come from the line of Seth.
https://www.biblegateway.com/passage/?search=Genesis%204&version=TLB
People existed prior to Adam.
Adam was the first person to exist that had a soul.
That's what it means to be created in the image of God, to have a soul. To be a spiritual being, not just a physical being.