ante diem xi kalendas octobres

Mercatus -- stocking the cupboards after the ludi Romani

490 B.C. -- battle of Marathon (yet another reckoning)

490 B.C. -- the Athenian polemarch Callimachus dies during the Marathon campaign (contingent on the above, obviously)

19 B.C. -- death of Publius Vergilius Maro (more likely than yesterday)

37 A.D. -- the emperor Gaius (Caligula) is given the title pater patriae

1st century A.D. -- martyrdom of Iphigenia