Ota Dokan (太田 道灌, Ōta Dōkan), 1432-1486, was born as Ota Sukenaga (太田 資長) into a daimyo family descending from Minamoto no Yorimasa. In 1457 he built the castle of Edo and in 1458 he took the name Dokan, by which he is mainly known. The castle was chosen as the home of shogun Tokugawa Ieyasu in 1590, and was used as the seat for the government. The site of the castle is now occupied by the imperial palace. Every October 1, Tokyo celebrates its anniversary, in honor of the memory of the founder Ota Dokan. Events June 1 - Battle of San Romano - Florence defeats Siena foundation of Université de Caen In the end of the Hook and Cod wars, Jacqueline, Countess of Hainaut and Holland is forced by Philip the Good, Duke of Burgundy, to abdicate all her estates in his favour; end of Hainaut... Events Tízoc, Aztec ruler of Tenochtitlan dies of poisoning. ... Daimyo Matsudaira Katamori visits the residence of a retainer. ... Minamoto no Yorimasa (源頼政)(1106-1180) was the leader of the Minamoto armies at the beginning of the Genpei War. ... Events University of Freiburg founded. ... Moat, wall, and building at Edo Castle Stone foundation of the main tower at Edo Castle. ... Events January 24 - Hungary Foundation of Magdalen College, University of Oxford George of Podebrady becomes king of Bohemia Pope Pius II becomes pope Turks sack the Acropolis Births Jacopo Sannazaro, Italian poet Deaths June 27 - Alfonso V of Aragon August 6 - Pope Callixtus III Marques de Santillana, Spanish poet Categories... October 1 is the 274th day of the year (275th in Leap years). ... The modern skyline of Tokyo is highly decentralized. ...

Among the other monuments built by Dokan are the Hirakawa Shrine, which is celebrated with a festival on April 24-25. The shrine, located on the Edo-jo castle grounds, is dedicated to Sugawara no Michizane, the deity of poetry and scholarship. April 24 is the 114th day of the year in the Gregorian Calendar (115th in leap years). ... April 25 is the 115th day of the year in the Gregorian Calendar (116th in leap years). ... Sugawara no Michizane (菅原道真 845 - March 26, 903) was a scholar, poet, and politician in Heian Period of Japan. ...

Ota Dokan's death poem is as follows: A death poem is a poem written near the time of ones own death. ...