was a after Genki and before Bunroku. This period spanned the years from July 1573 through December 1592. The reigning emperors were and . Change of era 1573 : The new era name was created to mark a number of regional wars. The era name was inspired by a passage from the Chinese classic Laozi: :"Those who are at peace with nature bring all under Heaven into its correct pattern" (清静者為天下正). The era name Tenshō was suggested by Oda Nobunaga. The previous era ended and a new one commenced in Genki 4, the 28th day of the 7th month. Events of the Tenshō era European dates up to October 4, 1582 are given in the Julian calendar. Dates since October 15, 1582 are given in the Gregorian calendar. 1573 (Tenshō 1, 7th month): Ashikaga Yoshiaki lost his position as shōgun. He shaved his head, becoming a Buddhist priest. Initially, he took the priestly name Sho-san, but he eventually came to be known as Rei-o In. 1574 (Tenshō 2, 1st month): Sectarian rebellion in Echizen Province. 1574 (Tenshō 2, 9th month): Suppression of sectarian rebellion in Nagashima. 1575 (Tenshō 3, 5th month): Takeda Katsuyori led an army into Tōtōmi Province where he lay siege to Nagashino Castle. The Tokugawa defended the castle; and Tokugawa Ieayasu sought assistance from Oda Nobunaga. In response, Nobunaga and his son Nobutada arrived at Nagashino with a large force. In the ensuing Battle of Nagashino, the Takeda attackers were forced to retreat. 1576 (Tenshō 4): Takeda Katsuyori ordered the rebuilding of the Asama Shrine at the base of Mount Fuji in Suruga Province. 1579 (Tenshō 7, 5th month): Azuchi Sect Debates at Azuchi Castle. 1579 (Tenshō 7, 6th month): Akechi Mitsuhide makes himself master of Tanba Province. 1579 (Tenshō 7, 10th month): Oda Nobukatsu launches first Tenshō Iga War, ending with his defeat. 1580 (Tenshō 8, 11th month): Kaga sectarian rebellion suppressed. 1581 (Tenshō 9, 9th month): Oda Nobunaga relaunches the second Tenshō Iga War, ending with victory and Iga under left under Nobukatsu's control. 1582 (Tenshō 10): Takeda Katsuyori utter defeat by the forces of Oda Nobunaga led to the destruction of Takeda-built structures at the Asama Shrine. 1582 (Tenshō 10, 3rd month): Battle of Tenmokuzan. 1582 (Tenshō 10, 6th month): Incident at Honnō-ji, Battle of Yamazaki, Council of Kiyosu. February 20, 1582 (Tenshō 10, 28th day of the 1st month): A Japanese mission or