What appears to be 3 art pieces are actually 3 pieces of a map that Rogorn actually did take from Minarra, however, he was taking them back for his kingdom. In an attempt to have her husband become the next king of (insert faraway kingdom here), she decided to steal the map leading to a back way into the kingdom that the Crossroads guards planned on going through and attacking the kingdom, and kill the older prince Rogorn and his father the King.
Rogorn, seeing her sneak away after stealing the map, took 2 of his best bodyguards and stole it back from her one night. They tore it into 3 pieces to better safeguard it.
You venture off into (insert faraway kingdom here) and meet the current king who is looking for his oldest son, Ragorn, who took 2 of his best bodyguards to locate some stolen map pieces some time ago, and hasn't been heard from since.
(...to be continued...)