Related Clues:

• Heir, but not an heiress
• Small business successor, maybe
• Didactic term of address
• One learning about the birds and the bees?
• Archie Arnett, to Amy Poehler
• Tiny Tim, to Bob Cratchit
• Half of many a business partnership
• One of three in a Fred MacMurray sitcom
• Colin Hanks, to Tom Hanks
• Chip off the old block, maybe
• Elroy, to George Jetson
• Gun relative?
• Johnny Rivers hit, "Seventh ___"
• 49 Down's boy
• Pluto, to Saturn