title: Aoyama Tadatoshi
text: # Aoyama Tadatoshi
  
  Aoyama Tadatoshi (青山 忠俊, March 18, 1578 – June 1, 1643) was a Japanese daimyō of the early Edo period.
  
  ## Biography
  
  Tadatoshi was the son of Aoyama Tadanari, a Tokugawa vassal of the Sengoku period who was born in Mikawa Province. Tadatoshi, like his father, was a Tokugawa vassal, and was famous for his role as the third shōgun Iemitsu's teacher.
  
  He became a daimyō in 1603, when Tokugawa Ieyasu granted him the domain of Edosaki.
  
  