aka Ma and Pa Kent
Superman's earth parents, Jonathan and Martha Kent, who rescued the young Kal-El from his crashed Kryptonian rocket upon his arrival on Earth.
Naming the young Superbaby Clark , Martha's maiden name, the Kents cared for the child as their own and nurtured him with love, instilling in him the nature of morality, hope and emboldening his dreams.
When the Kents passed away from a strange virus, Clark Kent left Smallville for good and began his career in Metropolis.
Wikipedia entry on Pa Kent
Wikipedia entry on Ma Kent