The patrons of Chioggia are the martyrs Felix and Fortunatus, celebrated on 11 June. Their relics arrived here in 1110: Chioggia had by then become the most important town in the diocese, and when the bishop's seat moved the relics of the two saints moved with it. They have been the patrons of the salt town ever since.
Those relics are also among the few things saved from the fire that, on Christmas night 1623, completely destroyed the cathedral. Rebuilding began the following year, entrusted to Baldassare Longhena, and was finished only in 1802.
