Verrius Flaccus
A Roman scholar of the age of Augustus, whom Macrobius cites on the festivals of April.
Where the months got their names
Macrobius, Saturnalia 1.12–14 (early fifth century CE), in the edition of Franz Eyssenhardt (Leipzig, 1893) · early fifth century CE; the dialogue is set in the 380s
12.15
non tamen negat Verrius Flaccus hoc die postea constitutum, ut matronae Veneri sacrum facerent, cuius rei causam, quia huic loco non conuenit, praetereundum est.
Verrius Flaccus, however, does not deny that a rule was made later that married women should sacrifice to Venus on this day. The reason does not belong here, so I will pass over it.