Related Clues:

• About one of every two deliveries?
• Bart, to Homer
• Abel, to Adam
• Mama's boy?
• Tim, to Bob Cratchit
• One of the Trinity
• Business partner, perhaps
• Abel, to Eve
• Born first
• About one of every two deliveries
• Most aged
• Daughter's opposite
• Cain, for one
• 'My ___, the doctor'
• Hoss, to Ben