08/10/12 14:24:17
I serached on the net. Era name during edo period is not consistent
of tenno inauguration period at all.
Sometimes era was even changed for the convinience of syogun.
You can see power struggle between bakuhu and tyoutei.
Bakuhu estteemed chotei's privilege but placed chotei in the hands of
bakuhu.
It can be compared to the relationship between emperor and pope.