Brunelleschi and the Duomo

"Brunelleschi". On the street next to the church he helped complete, literally looking up at the dome.
 Licensed under Public Domain via Wikimedia Commons.

There's a NOVA episode about the Florence Cathedral, Basilica di Santa Maria del Fiore. It's also known as the Duomo, because of its massive dome,  designed by Filippo Brunelleschi in the early 1400s. The importance of the architect to the building is repeated (as he is named) successively, which suggest that it's a Third Turning event - that is, during period when people stand out compared to organizations.

Is it correct? Unfortunately, the dates of designing and building the dome cover such a wide period that it would depend entirely on which of them were chosen. Plus, the timing of the 15th Century Saeculum in Italy isn't easily found, so it could be gamed that way.  Although if 1492 is accepted as its end throughout Europe, it would make sense that the Fourth was roughly 1470-1492 and the Third 1448-1470.

Significant dates include:

• 1294: Cathedral design, including a requirement for a massive dome,  is approved by the Florence city fathers
• 1296: First stone is laid down.
• 1377: Brunelleschi is born.
• 1380: Nave is complete.
• 1401: Competition for new doors for the Baptistry. Ghiberti is victorious over the other competitors, including Brunelleschi.
• 1418: Cathedral is complete...except for the dome. Competition is held to find an architect to build it.Ghiberti and Brunelleschi are the main competitors: Brunelleschi wins.
• 1420: Work begins on the dome.
• 1436: The dome is completed.
• 1446: Brunelleschi dies.

By the earlier date range, the dome's building must be solidly in the Second Turning. If we wanted to infer the Saeculum based on the other events here, we could say that 1294 is clearly a First, with a major infrastructure build being approved and initiated. It seems likely that 1401 is also a First, being just more than a century later (one full Saeculum, that is), and with another government-sponsored infrastructure event. If that's the beginning of the First, furthermore, it lines up well with the earlier estimate of the Saeculum dates. (And implies that 1380-1400 was a Crisis period. If so, its start would line up with the Revolt of the Ciompi, short-lived though it was.)

It doesn't appear, that is, that he's known because it's a Third Turning.