Lamentation - Fire & Blood

The ancestral sword of House Royce, Lamentation was the Valyrian steel sword passed down the family for generations. The last known owner was Ser Willam Royce, a knight in the service of Queen Rhaenyra. 

Royce was killed by rioters while trying to recover the dead body of Prince Joffrey Velaryon. Lamentation was thought lost. 

There were rumours that the blade had been taken by Ser Warrick Wheaton and used in his assault on the Dragonpit, injuring the dragon Syrax in the process, though this could not be confirmed.