[Source] Tulak Hord's lightsaber was the weapon of Tulak Hord, a Sith Lord of the original Sith Empire. Along with many of Hord's artifacts, the lightsaber was lost in the years after the Sith's death, but the Sith Lord Darth Marr discovered the weapon on the planet Dromund Fels sometime before 3678 BBY, shortly before his ascension to the reconstituted Sith Empire's ruling Dark Council.