Records of heads of state
Officially, the current Emperor of Japan, Akihito is the 125th in line from the first emperor Jimmu, who is variously believed to have reigned in the 1st or 7th century BC. The earliest documentary evidence is only for the 29th emperor, Kinmei (AD 509–571); however, this is sufficient such that even the most conservative of estimates still places the Japanese imperial family as among the oldest lines in the world today.
Emperor Chūai
, also known as "Tarashinakatsuhiko no Sumeramikoto (足仲彦天皇)", was the 14th emperor of Japan, according to the traditional order of succession. The dates of his reign are conventionally given as 192 to 200. He was the first emperor who was not the child of the previous emperor, being instead the nephew of his predecessor Emperor Seimu.