Joyeuse

Joyeuse, is the name traditionally thought to have been given to a part of Charlemagne's personal sword. The name translates as "joyful".

Joyeuse in legend
Some legends claim that it was forged to contain the Lance of Longinus within its pommel; others state it was smithed from the same materials as Roland's Durendal and Ogier's Curtana.

The 11th century Song of Roland describes the sword:
 * [Charlemagne] was wearing his fine white coat of mail and his helmet with gold-studded stones; by his side hung Joyeuse, and never was there a sword to match it; its colour changed thirty times a day.

Some seven hundred years later, Bulfinch's Mythology described Charlemagne using Joyeuse to behead the Saracen commander Corsuble as well as to knight his comrade Ogier the Dane. The town of Joyeuse, in Ardèche, is supposedly named after the sword: Joyeuse was allegedly lost in a battle and retrieved by one of the knights of Charlemagne; to thank him, Charlemagne granted him an appanage named Joyeuse. Baligant, a general of the Saracens in The Song of Roland, named his sword Précieuse, in order not to seem inferior to Charlemagne.

Coronation sword of the French kings
A sword identified with Charlemagne's Joyeuse was carried in front of the Coronation processionals for French kings, for the first time in 1270 (Philip III), and for the last time in 1824 (Charles X). The sword was kept in the  Saint Denis Basilica  since at least 1505, and it was  moved to the Louvre in 1793.

This Joyeuse as preserved today is a composite of various parts added over the centuries of use as coronation sword. But at the core, it consists of a medieval blade of Oakeshott type XII, mostly dated to about the 10th century. Martin Conway argued the blade might date to the early 9th century, opening the possibility that it was indeed the sword of Charlemagne, while Guy Laking dated it to the early 13th century. Some authors have even argued that the medieval blade may have been replaced by a modern replica in 1804 when the sword was prepared for the coronation of Napoleon Bonaparte. The Louvre's official website dates the pommel to the 10th to 11th centuries, the cross to the second half of the 12th, and the grip to the 13th century.

Sword in Vienna
Before the Miholjanec legend had been regarded, the so-called sword of Attila in Vienna was known as the sword of Charlemagne.