From 1368 until 1912 only one era name was used by each emperor, who was posthumously known by his era name.

Since 1868 each emperor has been known posthumously by his era name.

Prince Bi was installed on the throne, to be posthumously known as Zi'ao.

For his works, Agricola is posthumously known as the "Father of Mineralogy".

This emperor is known posthumously as Sado-no In (佐渡院) because his last years were spent at Sado.

He is posthumously known as Kōbō Daishi.

Some of the starving people from this group, known posthumously as the Donner Party, ate a pet dog for sustenance.

However the prince died young in 1565 and posthumously known as Prince Pasarean.

She became posthumously known to a wide public when portrayed on the stage in a 1988 play, The Best of Friends.

Hirohito, known posthumously as Emperor Showa, died 13 months ago, after a reign of 62 years.