Original: Years : 1259 1260 1261 1262 1263 1264 1265 Decades : 1230s 1240s 1250s 1260s 1270s 1280s 1290s Centuries : 12th century 13th century 14th century Events King Mindaugas of Lithuania renounces Christianity , returning to his pagan roots and reverting to Grand Duke of Lithuania .
Simplified: Events King Mindaugas of Lithuania renounces Christianity , returning to his pagan roots and reverting to Grand Duke of Lithuania .