Kōgen

Kōgen (康元) was a Japanese era name (年号,, nengō,; lit. "year name") after Kenchō and before Shōka. This period started in October 1256 and ended in March 1257.^[1] The reigning emperor was Go-Fukakusa-tennō (後深草天皇).^[2]

Events of the Kōgen era

1 September 1256 (Kōgen 1, 11th day of the 8th month): Kujō Yoritsune, also known as Fujiwara Yoritsune, died at the age of 39 years.^[3]
14 October 1256 (Kōgen 1, 24th day of the 9th month): Yoritsune's son and successor as Kamakura shogun, Kujō Yoritsugu, also known as Fujiwara Yoritsugu, died at the age of 18 years.^[3]

Kamakura period

References

↑ Nussbaum, Louis-Frédéric. (2005). "Kōgen" in Japan encyclopedia, p. 542.
↑ Titsingh, Isaac. (1834). Annales des empereurs du Japon, pp. 248-253; Varley, H. Paul. (1980). Jinnō Shōtōki. p. 231-232.
↑ ^3.0 ^3.1 Titsingh, p. 252.

Other websites

National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection

Kōgen	1st	2nd
	1256	1257

Preceded by:
Kenchō

Era or nengō:
Kōgen

Succeeded by:
Shōka

v t e Japanese era names (Nengō)
Legendary Period
Kofun period
Asuka period 538–710	Taika 645–650 · Hakuchi 650–654 · Shuchō 686–686 · Taihō 701–704 · Keiun 704–708 · Wadō 708–715
Nara period 710–784	Reiki 715–717 · Yōrō 717–724 · Jinki 724–729 · Tenpyō 729–749 · Tenpyō-kanpō 749–749 · Tenpyō-shōhō 749–757 · Tenpyō-hōji 757–765 · Tenpyō-jingo 765–767 · Jingo-keiun 767–770 · Hōki 770–781 · Ten'ō 781–782 · Enryaku 782–806
Heian period 784–1185	Daidō 806–810 · Kōnin 810–824 · Tenchō 824–834 · Jōwa 834–848 · Kashō 848–851 · Ninju 851–854 · Saikō 854–857 · Ten'an 857–859 · Jōgan 859–877 · Gangyō 877–885 · Ninna 885–889 · Kanpyō 889–898 · Shōtai 898–901 · Engi 901–923 · Enchō 923–931 · Jōhei 931–938 · Tengyō 938–947 · Tenryaku 947–957 · Tentoku 957–961 · Ōwa 961–964 · Kōhō 964–968 · Anna 968–970 · Tenroku 970–973 · Ten'en 973–976 · Jōgen 976–978 · Tengen 978–983 · Eikan 983–985 · Kanna 985–987 · Eien 987–988 · Eiso 988–990 · Shōryaku 990–995 · Chōtoku 995–999 · Chōhō 999–1004 · Kankō 1004–1012 · Chōwa 1012–1017 · Kannin 1017–1021 · Jian 1021–1024 · Manju 1024–1028 · Chōgen 1028–1037 · Chōryaku 1037–1040 · Chōkyū 1040–1044 · Kantoku 1044–1046 · Eishō 1046–1053 · Tengi 1053–1058 · Kōhei 1058–1065 · Jiryaku 1065–1069 · Enkyū 1069–1074 · Jōhō 1074–1077 · Jōryaku 1077–1081 · Eihō 1081–1084 · Ōtoku 1084–1087 · Kanji 1087–1094 · Kahō 1094–1096 · Eichō 1096–1097 · Jōtoku 1097–1099 · Kōwa 1099–1104 · Chōji 1104–1106 · Kashō 1106–1108 · Tennin 1108–1110 · Ten'ei 1110–1113 · Eikyū 1113–1118 · Gen'ei 1118–1120 · Hōan 1120–1124 · Tenji 1124–1126 · Daiji 1126–1131 · Tenshō 1131–1132 · Chōshō 1132–1135 · Hōen 1135–1141 · Eiji 1141–1142 · Kōji 1142–1144 · Ten'yō 1144–1145 · Kyūan 1145–1151 · Ninpei 1151–1154 · Kyūju 1154–1156 · Hōgen 1156–1159 · Heiji 1159–1160 · Eiryaku 1160–1161 · Ōhō 1161–1163 · Chōkan 1163–1165 · Eiman 1165–1166 · Nin'an 1166–1169 · Kaō 1169–1171 · Jōan 1171–1175 · Angen 1175–1177 · Jishō 1177–1181 · Yōwa 1181–1182 · Juei 1182–1184 · Genryaku 1184–1185
Kamakura period 1185–1333	Bunji 1185–1190 · Kenkyū 1190–1199 · Shōji 1199–1201 · Kennin 1201–1204 · Genkyū 1204–1206 · Ken'ei 1206–1207 · Jōgen 1207–1211 · Kenryaku 1211–1213 · Kempo 1213–1219 · Jōkyū 1219–1222 · Jōō 1222–1224 · Gennin 1224–1225 · Karoku 1225–1227 · Antei 1227–1229 · Kangi 1229–1232 · Jōei 1232–1233 · Tenpuku 1233–1234 · Bunryaku 1234–1235 · Katei 1235–1238 · Ryakunin 1238–1239 · En'ō 1239–1240 · Ninji 1240–1243 · Kangen 1243–1247 · Hōji 1247–1249 · Kenchō 1249–1256 · Kōgen 1256–1257 · Shōka 1257–1259 · Shōgen 1259–1260 · Bun'ō 1260–1261 · Kōchō 1261–1264 · Bun'ei 1264–1275 · Kenji 1275–1278 · Kōan 1278–1288 · Shōō 1288–1293 · Einin 1293–1299 · Shōan 1299–1302 · Kengen 1302–1303 · Kagen 1303–1306 · Tokuji 1306–1308 · Enkyō 1308–1311 · Ōchō 1311–1312 · Shōwa 1312–1317 · Bunpō 1317–1319 · Gen'ō 1319–1321 · Genkyō 1321–1324 · Shōchū 1324–1326 · Karyaku 1326–1329 · Gentoku 1329–1331 · Genkō 1331–1334^♯ · Shōkyō 1332–1334^₪
Nanboku-chō period (Northern Court) 1336–1392	Kemmu 1334–1338 · Ryakuō 1338–1342 · Kōei 1342–1345 · Jōwa 1345–1350 · Kannō 1350–1352 · Bunna 1352–1356 · Enbun 1356–1361 · Kōan 1361–1362 · Jōji 1362–1368 · Ōan 1368–1375 · Eiwa 1375–1379 · Kōryaku 1379–1381 · Eitoku 1381–1384 · Shitoku 1384–1387 · Kakei 1387–1389 · Kōō 1389–1390 · Meitoku 1390–1394^‡
Nanboku-chō period (Southern Court) 1336–1392	Kemmu 1334–1336 · Engen 1336–1340 · Kōkoku 1340–1346 · Shōhei 1346–1370 · Kentoku 1370–1372 · Bunchū 1372–1375 · Tenju 1375–1381 · Kōwa 1381–1384 · Genchū 1384–1392^‡
Muromachi period 1333–1573	Ōei 1394–1428 · Shōchō 1428–1429 · Eikyō 1429–1441 · Kakitsu 1441–1444 · Bun'an 1444–1449 · Hōtoku 1449–1452 · Kyōtoku 1452–1455 · Kōshō 1455–1457 · Chōroku 1457–1460 · Kanshō 1460–1466 · Bunshō 1466–1467 · Ōnin 1467–1469 · Bunmei 1469–1487 · Chōkyō 1487–1489 · Entoku 1489–1492 · Meiō 1492–1501 · Bunki 1501–1521 · Eishō 1504–1521 · Daiei 1521–1528 · Kyōroku 1528–1532 · Tenbun 1532–1555 · Kōji 1555–1558 · Eiroku 1558–1570 · Genki 1570–1573
Momoyama period 1573–1600	Tenshō 1573–1592 · Bunroku 1592–1596 · Keichō 1596–1615
Edo period 1600–1868	Genna 1615–1624 · Kan'ei 1624–1644 · Shōhō 1644–1648 · Keian 1648–1652 · Jōō 1652–1655 · Meireki 1655–1658 · Manji 1658–1661 · Kanbun 1661–1673 · Enpō 1673–1681 · Tenna 1681–1684 · Jōkyō 1684–1688 · Genroku 1688–1704 · Hōei 1704–1711 · Shōtoku 1711–1716 · Kyōhō 1716–1736 · Genbun 1736–1741 · Kanpō 1741–1744 · Enkyō 1744–1748 · Kan'en 1748–1751 · Hōreki 1751–1764 · Meiwa 1764–1772 · An'ei 1772–1781 · Tenmei 1781–1789 · Kansei 1789–1801 · Kyōwa 1801–1804 · Bunka 1804–1818 · Bunsei 1818–1830 · Tenpō 1830–1844 · Kōka 1844–1848 · Kaei 1848–1854 · Ansei 1854–1860 · Man'en 1860–1861 · Bunkyū 1861–1864 · Genji 1864–1865 · Keiō 1865–1868
Modern Japan 1868–present	Meiji 1868–1912 · Taishō 1912–1926 · Shōwa 1926–1989 · Heisei 1989–2019 · Reiwa 2019–present
^♯The Northern pretenders did not recognize the Genkō era. Gentoku was used in the Northern Court until 1332. ^₪The Shōkyō era was recognized only by the Northern pretenders, not by the Southern Court. ^‡ Upon reunification of the Northern and Southern Courts in 1392, Genchū was discontinued. Meitoku was used until 1394.

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Kōgen

Events of the Kōgen era

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