ante diem iv nonas junias

Saecular Games (day 2) -- the celebration of Rome's anniversary continues

261 B.C. -- death of Antiochus I Soter (I still have not been able to confirm this date)

177 A.D. -- martyrdom of Blandina, Alexander (and others) at Lyons (a.k.a. the Martyrs of Lyons)

193 A.D. -- recently-deposed emperor-for-a-little-while Didius Julianus is murdered


... we also note that it's Corpus Christi Day, and William Hone's Everyday Book has an interesting entry on the origin of religious plays ...