X & D are nearly inseparable. Identify X and (A+B+C).
A
B
C
B is generic and D isn't about the person.
Hint for A = Not one of the main characters. Look into Book 3-7.
Hint for D = That's a royal fellow, ship is on what he returns, to his home atop the towering two ring like mountains, the abode of the lord. If that makes sense to you.
Answer: Chang, Poole & Schmidt
A = Cho Chang
B = Swimming Pool
C = Eric Schmidt (CEO Google)
X = Denny Crane
D = Howard Shore




Cracked by Kaushik.