A more real legendary sword than Excalibur

 

I'm not going to go into great detail about this, because the linked article does that. Here, I will just say that Durandal, the sword of Roland, is much more likely to have existed than Arthur's legendary sword Excalibur.  Whether it first belonged to Hector (famous for getting defeated, aka killed, by Achilles in front of the walls of Troy), that's not so sure. But Roland very likely did exist, and he very likely had a sword.  

Durandal: The Epic Saga of Roland's Legendary Sword

Here is a picture of the sword that was embedded in rock above a chapel in France (but apparently that quite recently went missing, aka stolen), along with the legendary Roland and the legendary sword.

Despite the uniqueness of this particular sword in a stone, I doubt it was the real Durendal, as that one had some Christian relics in its hilt. That is also mentioned in the article.