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Kōgen
Kōgen
was a
Japanese era name
after
Kenchō
and before
Shōka.
This period
spanned
the years from October 1256 to
March
1257. The reigning emperor was
Emperor Go-Fukakusa
.
Change
of
era
1256
Kōgen gannen
: The new
era name
was created to mark an event or a number of
events
. The previous era ended and a new one commenced in
Kenchō
8.
Events
of the ''Kōgen'' era
September 1
, 1256
:
Kujō Yoritsune
, also known as
Fujiwara Yoritsune
, died at
the age
of
39
years.
October 14
, 1256
: Yoritsune's son and successor as
Kamakura shōgun
,
Kujō Yoritsugu
, also known as
Fujiwara Yoritsugu
, died at the
age
of
18
years.
