Dza Mura Tulku
From Rigpa Wiki
Dza Mura Tulku (Tib. རྫ་མུ་ར་སྤྲུལ་སྐུ་, Wyl. rdza mu ra sprul sku) was a master of the first half of the twentieth century from East Tibet, famous for organizing large gatherings dedicated to the recitation of Avalokiteshvara’s six syllable mantra where tens of thousands of people would gather.