Murgleis (translated Miurgre in fan translations) is a S-Ranked Divine Weapon used by Hanon, one of the Eight Heroes and the founder of Sacae.
Her weapon is also referred to as "The Bow of the Winds". It is obtained after completing a gaiden chapter in the Sacae route, which is accessed by completing Chapter 20 in under 25 turns and with Sin, Sue, and Dayan still alive at the end.
If the Ilia route was taken, Jodel will join your team with Murgleis in his inventory in Chapter 21.
Murgleis is unique because it is the only bow in the game that does not deal bonus damage against Pegasus Knights and Falcon Knights.
In the medieval French epic poem "The Song of Roland", Murgleis is the name of the sword of Ganelon, the traitor. Ganelon was Roland's stepfather and a vassal of Charlemagne, but was of lesser status than Roland, since Roland was Charlemagne's nephew and the greatest knight in the kingdom. Ganelon conspires with the Saracens of Spain to kill Roland, thus setting the poem's plot in motion.