or Baccius, (Andrew), a celebrated physician of the 16th century, born at St Elpideo. He practised physic at Rome with great reputation, and was first physician to pope Sixtus V. The most scarce and valuable of his works are, 1. De thermis. 2. De naturali vinorum historia. 3. De venenis et antidotis. 4. De gemmis ac lapidibus pretiosis.