Who was Seth?
Seth was the son born to Adam and Eve after the death of Abel (Genesis 4:25 f; 5:3 ff; 1 Ch 1:1; Lk 3:38).
In Gen 4:25 the derivation of the name is given. Eve "called his name Seth: For, said she, God hath appointed (Heb: shath) me another seed instead of Abel."
In 1 Ch 1:1 the King James Version, the form is "Sheth"; elsewhere in the King James Version and in the Revised Version (British and American) throughout the form is "Seth."
IBSE, "Seth" (in the public domain) with minor edits.