DC Comics © January 1964, Superman #166.  The story "The Sons of Superman!". Superman's sons become Nightwing II and Flamebird II.

Characters: Superman; Kal-El II [Superman's son] (intro); Jor-El II [Superman's son] (intro); Superman's wife (unrevealed) (all imaginary)

Script: Edmond Hamilton   Pencils: Curt Swan    Inks: George Klein