What happened to the Valyrian Steel sword Lamentation?

[LordPathera]

WOIAF states that the sword was "lost" when it's owner Ser Willum Royce was killed in the Storming of the Dragonpit.

If we assume that dragonfire has a role in creating valyrian steel then that would mean that dragonfire can at least damage if not destroy it as well.

So does that mean that Lamentation was broken/destroyed by dragonfire and no one simply had the motivation, time or skill to reforge it?

Did Ser Willum drop the sword on his death and it got stolen by a survivor with said-survivor's descendants hanging up the sword in their home with it's true origins lost?

Was the sword stolen and that's why Ser Willum ended up dying?

[Lion of the West]

I kind of assume that Ser Willum was defending the Dragonpit, given that the Vale was for Rhaenyra, and that someone stole it and then it started to wander from hand to hand, and now no one knows where the hell it is.

[Archaeology]

Good question.

One would've thought it'd have surfaced - given how incredibly precious they are, and the amount of time certain people devote to finding them (Tywin, for example) - if it just had been seized by some smallfolk.

[The Prince of Magpies]

It could have wound up in another house/knight's hands under a different name. I think our best bet here is to examine the list of Valyrian blades that have featured in the series (http://awoiaf.westeros.org/index.php/Valyrian_steel#List_of_known_Valyrian_steel_blades) and see which are ruled out, and which are not, by the timeline. For instance, it can't be Heartsbane (in House Tarly for 500 years) or Ice (the Ice of the main series was in House Stark for over 400 years). Red Rain, perhaps? We don't know when it came into Drumm hands - possibly during Dagon's raiding. The circumstances surrounding Lamentation's disappearance mean it could have wound up in opportunistic (but not particularly skilled or prestigious) hands, explaining how Hilmar Drumm defeated the knight wielding it with nothing more than a wooden cudgel.

[Luddagain]

There are a LOT of missing swords

Lamentation

Bright roar

Darksister

Blackfyre

Ice the original

Legendary

Just maid

Light bringer

[Lion of the West]

It could have wound up in another house/knight's hands under a different name. I think our best bet here is to examine the list of Valyrian blades that have featured in the series (http://awoiaf.westeros.org/index.php/Valyrian_steel#List_of_known_Valyrian_steel_blades) and see which are ruled out, and which are not, by the timeline. For instance, it can't be Heartsbane (in House Tarly for 500 years) or Ice (the Ice of the main series was in House Stark for over 400 years). Red Rain, perhaps? We don't know when it came into Drumm hands - possibly during Dagon's raiding. The circumstances surrounding Lamentation's disappearance mean it could have wound up in opportunistic (but not particularly skilled or prestigious) hands, explaining how Hilmar Drumm defeated the knight wielding it with nothing more than a wooden cudgel.

If Red Rain is indeed the sword of House Reyne then I would kind of imagine that the Red Kraken's raids is a more likely time period.

[The Prince of Magpies]

If Red Rain is indeed the sword of House Reyne then I would kind of imagine that the Red Kraken's raids is a more likely time period.

Oh yeah, good point. Dalton Greyjoy's raids would be more likely in that scenario alright.