1337 or 1338—Nicomedia surrenders.
1338—Karasi, first of the Turkish emirates to be absorbed, is incorporated in Orkhan’s state.
c. 1338—Osmanlis reach the Bosphorus at Haïdar Pasha.
1343—Empress Anna makes overtures to Orkhan for aid against Cantacuzenos.
1345—Orkhan accepts proposal of alliance with Cantacuzenos.
First Osmanlis cross to Europe to fight for Cantacuzenos against Anna.
1346—Orkhan marries Theodora, granddaughter of the Bulgarian czar and daughter of Cantacuzenos, who is besieging Constantinople with Ottoman aid.
1348—The ‘Black Death’ ravages Europe.
1349—Cantacuzenos calls again upon Orkhan for aid. Twenty thousand Ottoman horsemen are sent to help in preventing Salonika from falling into Serbian hands.
c. 1351—First convention between Orkhan and the Genoese.