Dynasty weapons.

I noticed that if a hero levels up through the altar of the seventh dragon, where they gain experience until the next level, the Dynasty weapon doesn't gain experience. I don't understand if weapons gain experience for completing quests when the reward is given to the hero. No one has compiled information on where to obtain each weapon. I have fifteen weapons, meaning I'm missing ten to complete the set. One is the Batu totem, which can be bought, and I know where to find two more weapons. But I have no idea where to find the rest, for example, the Vislobone Sword or the Staff of Eight Aspects of Ashi.