OOC: C7 - Loot table: Nauglath Ruins - Dragon Blood Sworn
What Toben said, though Ryland may know more being a bard. Eles seemed to know quite a lot. If you tracked him down, you might have a more meaningful conversation.
Melkor is something very dark and evil, more powerful than all the Dischords/Dark Maiar, and their leader. That's about the extent of knowledge among the heroes, leaders, and scholars of the day. The common folk won't even know the name.