Complex sentence: He studied economy in Venice, then moved to study in Ingolstadt under the patronage of his cousin Matthias Flacius (Mattia Flacco), and then went to study medicine and philosophy at the University of Padova.
Split into simpler sentences: He studied economy in Venice, then he moved to study in Ingolstadt under the patronage of his cousin Matthias Flacius (Mattia Flacco). Then he went to study medicine and philosophy at the University of Padova.