Main Page | See live article | Alphabetical index Centuries: 12th century - 13th century - 14th century Decades: 1200s 1210s 1220s 1230s 1240s - 1250s - 1260s 1270s 1280s 1290s 1300s Years: 1249 1250 1251 1252 1253 - 1254 - 1255 1256 1257 1258 1259 Events December 2 - Manfred of Sicily defeats army of Pope Innocent IV at Foggia. Theodore II Lascaris succeeds John III Ducas Vatatzes as Byzantine emperor. Byzantines defeat Bulgarians at Adrianople. Alkmaar granted city rights. Births Marco Polo, Venetian merchant and explorer Deaths May 20 - Conrad IV of Germany December 7 - Pope Innocent IV John III Ducas Vatatzes, Eastern emperor Monarchs/Presidents Aragon - James I King of Aragon and count of Barcelona (reigned from 1213 to 1276)\n This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.