Michael VIII crowned co-emperor at NicaeaJan 1, 1259Labels: Michael VIII, John IVBritannicaBritannica
Nicaean victory at the Battle of PelagoniaJul 1, 1259Labels: Battle of, NicaeaBattle PelagoniaBritannica
Strategopoulos retakes Constantinople for NicaeaJul 25, 1261Labels: Alexios Strategopoulos, ConstantinopleReconquest 1261Britannica
Michael VIII formally restored as emperor in the capitalAug 1, 1261Labels: Michael VIII, ConstantinopleBritannicaReconquest 1261
Andronikos II crowned, securing Palaiologan successionNov 8, 1272Labels: Andronikos II, Palaiologan dynastyAndronikos II
Council of Lyon proclaims Greek–Latin unionJul 6, 1274Labels: Council of, Michael VIIINew AdventCouncil Lyon II
Sicilian Vespers erupts, weakening Angevin threatMar 30, 1282Labels: Sicilian Vespers, Charles ofBritannicaSicilian Vespers
Michael VIII dies; Andronikos II rules aloneDec 11, 1282Labels: Michael VIII, Andronikos IIBritannicaBritannica
Council of Blachernae repudiates the Union of LyonJan 1, 1285Labels: Council of, Blachernae PalaceCouncil 1285
Ottoman victory at Bapheus accelerates Anatolian lossesJul 27, 1302Labels: Battle of, OttomansBapheus
Civil war ends with Andronikos III taking ConstantinopleMay 1, 1328Labels: Andronikos III, Andronikos IIBritannicaCivil War 1321
John VI proclaimed emperor at DidymoteichosOct 26, 1341Labels: John VI, DidymoteichosBritannicaJohn VI
John VI enters Constantinople and is crowned co-emperorMay 21, 1347Labels: John VI, ConstantinopleBritannicaJohn VI
Byzantine–Genoese war erupts over customs and GalataAug 1, 1348Labels: Byzantine Genoese, GalataByz Genoa War
Bayezid I begins long blockade of ConstantinopleJan 1, 1394Labels: Bayezid I, Constantinople blockadeSiege 1394 1402Britannica
Ottoman siege of 1422 tests Constantinople’s defensesJun 10, 1422Labels: Siege of, Murad IIBritannicaSiege 1422
Council of Florence signs decree of church unionJul 6, 1439Labels: Council of, Laetentur CaeliBritannicaVatican Bull
Ottoman siege begins; Constantinople fallsMay 29, 1453Labels: Fall of, Constantine XIBritannicaBritannica