pridie kalendas septembres

12 A.D. -- birth of the future emperor Gaius (Caligula) at Antium

40 A.D. -- Gaius (Caligula) celebrates an ovatio after his attempted military campaigns in Gaul and Britain

161 A.D. -- birth of the future emperor Commodus (and his twin, Titus Aurelius Fulvus Antoninus)