Lol, well having somebody who knows the rules will help hopefully. Well one "heir-type thing" Ive found in my halfway-thru-disk-one-indepth-playthrough is a statue in the Lindblum Inn (a Bobo?) It is said that the statue was bought by the original inkeeper and is passed down through the generations. It doesnt seem to have a connection with any NPC though, except maybe the Innkeeper; his only line technically is "Would you like to rest?". Maybe a certain other NPC reveals his name?

Edit: Also, Ill be focusing on finding clues within the actual game, seeing as how my literary/historical knowledge is very limited and that my interpretations of the riddle's meanings have been solely based from other opinions. So confusing