Aoyama Tadatoshi
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. Notes

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References
 Aoyama family history and biographical notes

Further reading
 Bolitho, Harold. (1974). Treasures Among Men: The Fudai Daimyo in Tokugawa Japan. New Haven: Yale University Press. ;  OCLC 185685588
Kodama Kōta 児玉幸多, Kitajima Masamoto 北島正元 (1966). Kantō no shohan 関東の諸藩. Tokyo: Shin Jinbutsu Ōraisha. 1578 births
1643 deaths
Fudai daimyo
Rōjū