Feb 2 Battle of Lincoln: English King Stephen captured by forces loyal to Empress Matilda and commanded by Robert, 1st Earl of Gloucester Sep 8 Battle of Qatwan [Samarkand]: Seljuqs defeated by a Kara-Khitan army - beginning of the end of the Great Seljuk Empire 1140 Historical Events by Year 1142 Medieval Popes Gregory I Gregory XIII Julius II Julius III Leo X Pius V