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 Go-Nara
Emperor Go-Nara (後奈良天皇 "Go-Nara-tennō") (January 26, 1495 – September 27, 1557) was the 105th Emperor of Japan, according to the traditional order of succession. He reigned from June 9, 1526 until his death in 1557, during the Sengoku period. His personal name was Tomohito (知仁).