Ryoun Yamada, a.k.a. Yamada Ryoun or Yamada Masamichi, the son of the late Yamada Koun, is the current Zen master of San'un Zendo in Kamakura, Japan and the Abbot of the Sanbo Zen school of Zen Buddhism.
Source: “Ryoun Yamada”, English Wikipedia (CC BY-SA 4.0), excerpt
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