pridie idus apriles

ludi Cereri (day 1) -- games in honour of the grain goddes Ceres, instituted by/before 202 B.C.
65 A.D. -- death of Lucius Annaeus Seneca at the order of Nero
250 A.D. -- martyrdom of Vissa (or Vissia) at Fermo
300 A.D. -- martyrdom of Victor in what would become Portugal