Events in History Mar 18 1st Latern Council (9th ecumenical council) opens in Rome, agreements of the Concordat of Worms ratified Deaths in History Aug 29 King Eystein I of Norway (b. ca. 1088) Dec 4 Omar Khayyám, Persian poet, astronomer, mathematician, and philosopher (b. 1048) 1122 On This Day in History by Year 1124