Date of Birth: 
About Yamana Sōzen
- Yamana Sozen (?? ??, July 6, 1404 – April 15, 1473) was originally Yamana Mochitoyo (?? ??) before becoming a monk.
- Due to his red complexion, he was sometimes known as Aka-nyudo, "the Red Monk".
- He was one of the daimyos who fought against Hosokawa Katsumoto during the Onin War in Heian-kyo.
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