, or Kammu, was the 50th emperor of Japan,Imperial Household Agency (Kunaichō): 桓武天皇 (50); retrieved 2013-8-22. according to the traditional order of succession.Nussbaum, Louis-Frédéric. (2005). "Etchū" in Japan Encyclopedia, p. 464; Ponsonby-Fane, Richard. (1959). The Imperial House of Japan, pp. 61–62. Kammu reigned from 781 to 806, and it was during his reign that the scope of the emperor's powers reached its peak.Titsingh, Isaac. (1834). ; Brown, Delmer M. Gukanshō, pp. 277–279; Varley, H. Paul. Jinnō Shōtōki, pp. 148–150. His reign saw the transition from the Nara period to the Heian period.
 or kammu was the 50th emperor of japanimperial household agency (kunaichō) 桓武天皇 (50); retrieved 2013-8-22 according to the traditional order of successionnussbaum louis-frédéric (2005) "etchū" in japan encyclopedia p 464; ponsonby-fane richard (1959) the imperial house of japan pp 61–62 kammu reigned from 781 to 806 and it was during his reign that the scope of the emperor's powers reached its peaktitsingh isaac (1834) ; brown delmer m gukanshō pp 277–279; varley h paul jinnō shōtōki pp 148–150 his reign saw the transition from the nara period to the heian period