Traditional date: 230 ca.

Earliest record: 499

Current renovation: 1599-1600

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• The church is dedicated to St. Cecilia who was martyred after refusing to sacrifice to pagan gods

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• The current church is located on the site of St. Cecilia's original house where she was killed

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• Pope Urban I (222-230) made the house into a house church. The current church renovation is from Cardinal Paolo Sfondrati in 1599-1600