Related Clues:

• Grammy Award-winning singer Shania
• Old couple back for treatment, on the wagon
• Eponym for an annual prize for American humor
• Two of a kind (like Mark?)
• Fellow absorbing American writer
• Pseudonym of Samuel Langhorne Clemens
• A great American author or two
• Fellow absorbing adult writer
• Writer's counterpart penning article
• Mark as adult visiting his very closest relative
• Clemens handle