title: Date Masamune
text: was a Japanese daimyo in the Tōhoku region during the Azuchi-Momoyama period and Edo period. He was known as the  because he lost the use of an eye.
  
  Date clan
  In the Edo period, the Date clan were identified as one of the tozama or outsider clans, in contrast with the fudai or insider daimyō clans which were hereditary vassals or allies of the Tokugawa clan.
  
  Date sent troops which fought with the Tokugawa during the Battle of Sekigahara.
  
  Sendai-kō
  The feudal daimyō were sometimes identified with the suffix "-kō" (servant) combined with the name of a place or a castle.  
  
  In 1601, Date built the Sendai castle; and the modern-day city of Sendai developed around it. Sendai-kō was one of the ways Date Masamune was described.
  
  Keichō Embassy
  In 1613-1620, Date send Hasekura Tsunenaga on a diplomatic mission to the courts of Philip III of Spain in Madrid and Pope Paul V in Rome.
  
  This historic visit is called the .
  
  Legacy
  In 1991, a minor planet or main-belt asteroid  6859 Datemasamune was named after this Edo period historical figure.
  
  References
  
  Other websites 
  
   Aoba-jo (Sendai Castle) 
  
  1567 births
  1636 deaths
  Daimyo
  People from Yamagata Prefecture