- You may be looking for Gawain.
Sirgwain was a knight of King Halfur's court. He was considered by the other knights to be the bravest warrior in the king's army.
When an Ice Warrior entered the king's court and demanded assistance in repairing his spaceship, Sirgwain tried to strike him with his sword, but the warrior was unharmed and told Sirgwain to meet him in one month.
The very next day, Sirgwain set off on his journey to meet the Ice Warrior and travelled across parts of the country that had not been explored before. Upon arriving at the Ice Warrior's spaceship, Sirgwain's sword was taken from him by the warrior, who used it to cut down a tree. As Sirgwain and the other workers left, he watched as the Ice Warrior's spaceship took off and flew into space. (PROSE: Sirgwain and the Green Knight)