Szczerbiec, the sword of Boleslaw the Brave of Poland.
He famously notched the blade against the Golden Gate of Kiev when he entered the city in 1018. The action was traditionally repeated by his descendants when they came to Kiev during subsequent reigns.
Tizona, the sword of the Legendary Badass El Cid, the man who rode into battle in the middle of the night while dead.
For reference- Tizona translates loosely to “Burning Stick,” but significantly better to “Firebrand.”
What a boss.