During the reign of Emperor Kanmu, in January, 783, he was appointed to Jugoinoge (Junior Fifth Rank, Lower Grade) due to his diligence; in February, 783, he was appointed to Kozuke no suke (Assistant Governor) of Kozuke Province and in March, he was given the family name of 'SHIMOTSUKENU no Ason.'
桓武天皇即位後の延暦2年（783年）正月には精勤を認められて従五位下を授けられ、同年2月、上野国上野介に就任し、3月には「下毛野朝臣」が賜姓された。