Dosan Saito
Dosan Saito
Personal Information
Born: 1494
Place of Birth: Yamashiro Province (?)
Died: May 28, 1556
Cause of Death: Killed by Yoshitatsu Saito
Place of Death: Mino province
(later known as Gifu)
Style name: 斎藤 道三
Served: Saito
Participation(s): Battle of Kanoguchi

Dosan Saito or also known as Toshimasa Saito was the daimyo in Mino before Nobunaga Oda. He was killed by his son Yoshitatsu Saito in Mino.


Dosan was a former priest and oil merchant, at the time Toshimasa. He then took the name of Hidemoto Nishimura and murdered Nagahiro Nagai who had protected him. He frequently made war with Nobuhide Oda but arranged the marriage of his daughter to his son Nobunaga Oda.[1]

When his son-in law Nobunaga Oda embraced a new military technology he famously displayed on the occasion of a visit to his future father in-law in 1553. This technology involved of 800 ashigaru which came armed with long spears and 500 carried arquebuses. With this Dosan was much impressed.[2]

When his adopted son challanged him, Dosan went to war and was killed.[3]







  1. Samurai Source book, Stephen Turnbull pg 75
  2. Samurai Commanders (2) 1577-1638 pg.6
  3. Samurai Source book, Stephen Turnbull pg 75