Veiovis

In Etruscan and Roman mythology Veiovis, Veive or Vediovis, was an old Italian or Etruscan deity. Aulus Gellius, in the Noctes Atticae, speculated that Veiovis was the inverse or ill-omened counterpart of Jupiter; compare Summanus. Aulus Gellius observes that the particle ve- that prefixes the name of the god also appears in Latin words such as vesanus, "insane," and thus interprets the name Veiovis as the anti-Jove. Aulus Gellius also informs us that Veiovis received the sacrifice of a female goat, sacrificed ritu humano; this obscure phrase could either mean "after the manner of a human sacrifice" or "in the manner of a burial."
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[Roman] Veiovis (Vediovis) is one of the oldest of the Roman gods. He is a god of healing, and was later associated with the Greek Asclepius. He was mostly worshipped in Rome and Bovillae in Latium. On the Capitoline Hill and on the Tiber Island temples were erected in his honor. In spring, goats were sacrificed to avert plagues. Veiovis is portrayed as a young man, holding a bunch of arrows (or lightning bolts) in his hand, and is accompanied by a goat. He is probably based on the Etruscan god Veive.