Yamayoshi Toyomori (山吉 豊守) (1541–1577) was a hatamoto serving Uesugi Kenshin.
[1] Toyomori negotiated a peace treaty with the Hōjō clan in 1570, just a year after Toyomori became a hatomoto.
While Kenshin was out fighting elsewhere, he entrusted the defense of Kasugayama Castle to Toyomori.
Toyomori died of illness in 1577.
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