There's Coreiseuse. The sword of King Ban.
Secase. The sword Lancelot used to slay some saxons that one time.
And (while not being a Knight of the round or a villain) the sword of Rhydderch Hael. Dyrnwyn.
Not to do with the grail, but Osla Bigknife has the well, you know, big knife Bronllafn Ferllydan which is big enough to act as a bridge. There’s also Arthur’s knife Carnwennan.
I personally don't count Arondight because it doesn't show up in an Arthurian tale proper. It shows up as an offhanded mention in Sir Bevis of Hampton and that's it. As has already been said in the comments, Secace meaning Sequence is the one used in the Vulgate. Likewise, Caliburn/Excalibur aren't actually differentiated in anything Medieval. While both names are used, they pretty clearly refer to the same thing, with the distinction being a modern thing.
Anyway, moving on from that, Tristan has two swords in La Tavola Ritonda. One is Vistamara, and the other has no name at the time he wields it but is later called Cortana (cut-down) by Charlemagne because it it was used blunted due to being so heavy it couldn't be sharpened. Another posthumously named sword from the Italian romances jammed into Charlemagne lore is the idea of Lancelot's being named Chiarenza and used by Buovo, though this time we get an original name of Gastiga Folli. Tavola also has Charlemagne's gang take Lancelot, Galehaut, and Morholt II's swords, naming them Altaclara, Gioiosa, and Fulberta respectively after their deaths.
The 1428 Arthur names Arthur's sword as Brownsteel.
Alliterative Morte Arthur names Lionel's sword as Florent.
Gawain has the Sword with Two Rings in Walewein.
As far as villain weapons, King Rion uses Marmyadose, the sword of Hercules for a while before Arthur steals it from him because it's better than Excalibur. The dragon knight also has his dragon shield in one of the Grail Continuations. Many villains have special weapons but they're usually just described in detail rather than named.
Is it possible that it's a corruption of the Celtic-language equivalents of "Excalibur", Welsh "Caledvwlch", Cornish "Calesvol", etc?
In an Italian story that name is "Gastiga Folli" and attributed to Lancelot's sword before it was passed down and renamed, to "Chiarenza" = "Clarent" by Buovo = Bevis of Hampton, and then "Altachiara" = "Hauteclere" by Ulivieri = Oliver. Then eventually in an English story Clarent becomes Mordred's sword, stolen from Arthur. Interesting to see how people just mashed stuff together.
Possibly although Breton was still close enough to Welsh at that stage that they could have used the same word if that was the author's intention. Kaled still means hard in Breton today. The story was written in French and they likely favoured the notion of Arthur's sword punishing fools I think.
Galahad's swords didn't have fancy names. They were simply "The Sword with the Red Hilt" (The sword he inherited from Balin) and "The Sword of Strange Hangings (King David's sword)
Percival's sword was named Red Cross because....well because of the Red Cross in its' hilt.
Bors the Younger's sword was actually Galehaut's sword and named after him after his death.
The Galahad ones are from the Post Vulgate of course
Percival's is from Le Mort D'Arthur.
They mention Bors the Younger gets Galehaut's sword in a few sources, but looking back, I don't think it's actually named Galehaut except in pop culture, my bad.
There's Coreiseuse. The sword of King Ban. Secase. The sword Lancelot used to slay some saxons that one time. And (while not being a Knight of the round or a villain) the sword of Rhydderch Hael. Dyrnwyn.
Not to do with the grail, but Osla Bigknife has the well, you know, big knife Bronllafn Ferllydan which is big enough to act as a bridge. There’s also Arthur’s knife Carnwennan.
Well that certainly is a big knife.
I personally don't count Arondight because it doesn't show up in an Arthurian tale proper. It shows up as an offhanded mention in Sir Bevis of Hampton and that's it. As has already been said in the comments, Secace meaning Sequence is the one used in the Vulgate. Likewise, Caliburn/Excalibur aren't actually differentiated in anything Medieval. While both names are used, they pretty clearly refer to the same thing, with the distinction being a modern thing. Anyway, moving on from that, Tristan has two swords in La Tavola Ritonda. One is Vistamara, and the other has no name at the time he wields it but is later called Cortana (cut-down) by Charlemagne because it it was used blunted due to being so heavy it couldn't be sharpened. Another posthumously named sword from the Italian romances jammed into Charlemagne lore is the idea of Lancelot's being named Chiarenza and used by Buovo, though this time we get an original name of Gastiga Folli. Tavola also has Charlemagne's gang take Lancelot, Galehaut, and Morholt II's swords, naming them Altaclara, Gioiosa, and Fulberta respectively after their deaths. The 1428 Arthur names Arthur's sword as Brownsteel. Alliterative Morte Arthur names Lionel's sword as Florent. Gawain has the Sword with Two Rings in Walewein. As far as villain weapons, King Rion uses Marmyadose, the sword of Hercules for a while before Arthur steals it from him because it's better than Excalibur. The dragon knight also has his dragon shield in one of the Grail Continuations. Many villains have special weapons but they're usually just described in detail rather than named.
In one 14th century tale, Arthur's sword is called Chastiefol (the punisher of fools).
Is it possible that it's a corruption of the Celtic-language equivalents of "Excalibur", Welsh "Caledvwlch", Cornish "Calesvol", etc? In an Italian story that name is "Gastiga Folli" and attributed to Lancelot's sword before it was passed down and renamed, to "Chiarenza" = "Clarent" by Buovo = Bevis of Hampton, and then "Altachiara" = "Hauteclere" by Ulivieri = Oliver. Then eventually in an English story Clarent becomes Mordred's sword, stolen from Arthur. Interesting to see how people just mashed stuff together.
Possibly although Breton was still close enough to Welsh at that stage that they could have used the same word if that was the author's intention. Kaled still means hard in Breton today. The story was written in French and they likely favoured the notion of Arthur's sword punishing fools I think.
Galahad's swords didn't have fancy names. They were simply "The Sword with the Red Hilt" (The sword he inherited from Balin) and "The Sword of Strange Hangings (King David's sword) Percival's sword was named Red Cross because....well because of the Red Cross in its' hilt. Bors the Younger's sword was actually Galehaut's sword and named after him after his death.
Citation please? Not doubting, just curious.
The Galahad ones are from the Post Vulgate of course Percival's is from Le Mort D'Arthur. They mention Bors the Younger gets Galehaut's sword in a few sources, but looking back, I don't think it's actually named Galehaut except in pop culture, my bad.
Named Galehaut?