Increase of Lithuania, 1340.—Simeon successor of Ivan of Moscow.—Complaint of Simeon against Novgorod.—Outbreak in Torjok.—March of Simeon to Torjok.—Reign of Simeon.—Trouble in Riga territory.—Pskoff regions plundered by Olgerd.—Attack planned by Olgerd against Simeon.—Envoys sent to Chanibek by Simeon.—Seizure of Lithuanian envoys by Chanibek.—Victory of the Germans over Olgerd.—Olgerd’s desire for peace.—Marriage of Simeon.—Baptism of Olgerd.—Marriage of Olgerd and Julianna.—Peace in Tver.—Quarrels in Ryazan.—Attack of Simeon against Olgerd.—Death of Simeon by plague, 1353.—Death of Feognost, 1356.—Succession of Ivan, son of Ivan Kalitá.—Alexis successor of Feognost.—Struggle of Constantine of Suzdal to obtain the Grand Principality.—Trouble in Ryazan.—Ivan’s lieutenant imprisoned.—Mamat Hodja sent by the Horde to settle boundaries between Ryazan and Moscow.—Assassination of Mamat.—Intention of Olgerd to master all Russia.—Claims of Olgerd.—Influence of Olgerd in Tver.—Preference of Novgorod for Roman, Olgerd’s metropolitan.—Tradition concerning the days of Ivan.—Death of Chanibek, 1358.—Accession of Berdibek.—Death of Ivan the Mild, 1359.—Death of Berdibek, successor of Chanibek.—Successor of Kulpa followed by Navrus.—Appearance of Mamai, and division of the Horde.—Disturbance in Russia.—Abdul Khan on the right bank of the Volga, Murat on the east.—Great enmity of the two Hordes.—Dmitri of Moscow Grand Prince of all Russia.—Position in Moscow when Dmitri began to reign.—Jealousy of Abdul, the Khan, for Dmitri; trouble arising thereby.—Moscow takes possession of Bailozero, 1363.—Success of Dmitri.—Nizni patent obtained by Boris.—Boris summoned to Moscow.—March of Dmitri against Nizni.—Olgerd the great enemy of Moscow.—Condition in Tver.—Yeremi sets aside his oath to Tver, 1367.—Visit of Michael to Ryazan and Moscow.—Dmitri of Moscow.—Detention of Michael.—Reprimand from Mongol envoys.—Liberation of Michael.—Attack of Olgerd on Moscow, 1368.—Retreat of Olgerd.—Peace between Moscow and Tver.—Threats of Olgerd against Dmitri.—Campaign of Tver and Lithuania against Moscow, 1370 336 CHAPTER XVI