pridie kalendas apriles
- rites in honour of Luna at her temple on the Aventine
- c. 130 A.D. — martyrdom of Balbina
- 250 (?) A.D. — birth of the future emperor Constantius I Chlorus
- 307 A.D. — Constantine marries Fausta, the daughter of Maximian
- 1596 — birth of Rene Descartes (author, of course, of that bit of Latin which a pile of folks know)