[1] Niccolò Petronio Caldana was born in Piran at the beginning of 17th century.
[3] He served Pope Alexander VII as envoy at the court of Leopold I where he remained for ten years.
[3] Living in Bologna, he raised his two orphan nephews, one of them was the poet Marco Petronio Caldana .
[1] Therefore, on Sunday 15 May 1667 he was consecrated bishop in the monastic church of Santa Maria degli Angeli, Murano by Daniel Delfino, coadjutor patriarch of Aquileia.
[1] After a few years of residence in Poreč, on the way to Rome, he died in Piran in October 1670, and he was buried in that town.