# Michelangelo becomes architect of St Peter's in 1546 as a dated fabbrica office after Sangallo

Date: 1546

## The fact

In 1546 [Michelangelo](/people/michelangelo) became architect of St Peter's after Sangallo. He simplified the plan. Later completed dome campaigns are not solely this appointment. Michelangelo's documented role is: He took the fabbrica after Antonio da Sangallo the Younger died. He simplified the plan toward a Greek cross and worked without salary in the received file.

## Context

Paul III appointed. Sharing the fabbrica with unnamed workmen is required. The setting of Michelangelo becomes architect of St Peter's in 1546 as a dated fabbrica office after Sangallo is the public file around 1546-01-01. Shared offices, unnamed crews, printers, or later editors may appear without becoming this instrument. Driver [labour-market-tightness](/drivers/labour-market-tightness) is attached because the significance names a mechanism from this act, not because a standing list needed coverage.

The attached driver is labour-market-tightness. The welfare reading used in this dossier is improving. That reading is an impact-path choice, not a property stored on the Fact itself.

## Evidence and sources

Official locator: Holy See — St Peter's basilica heritage at https://www.vatican.va/ (Holy See). Independent locator: Britannica — Michelangelo, St Peter's at https://www.britannica.com/biography/Michelangelo (Encyclopaedia Britannica). Official carrier: Holy See — St Peter's basilica heritage (https://www.vatican.va/; Holy See). Independent carrier: Britannica — Michelangelo, St Peter's (https://www.britannica.com/biography/Michelangelo; Encyclopaedia Britannica).

Official or archival record: Holy See — St Peter's basilica heritage (https://www.vatican.va/; Holy See).

## Significance

Improving path from Michelangelo becomes architect of St Peter's in 1546 as a dated fabbrica office after Sangallo on 1546-01-01. Architect of a public basilica is a labour-and-industrial path of high weight as building office. The welfare reading on this path is improving.

Shared responsibility is part of Michelangelo becomes architect of St Peter's in 1546 as a dated fabbrica office after Sangallo. Naming Michelangelo does not delete co-authors, institutions, or later transmitters. The lag from 1546-01-01 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them.

## What is established and what is not

Established: a sourced public record of Michelangelo becomes architect of St Peter's in 1546 as a dated fabbrica office after Sangallo under 1546-01-01 for Michelangelo. Established: a sourced public record of Michelangelo becomes architect of St Peter's in 1546 as a dated fabbrica office after Sangallo under 1546-01-01.

If a number is not in the two records named above, it is not supplied here.

Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.

Confidence is stated on the impact path, not hidden in adjectives. Do not treat later completed dome as solely 1546. Do not twin with [Raphael](/people/raphael)'s earlier brief. Mixed effects of Michelangelo becomes architect of St Peter's in 1546 as a dated fabbrica office after Sangallo are separate paths.

## People

- Michelangelo: https://factrail.ai/people/michelangelo

## Drivers

- Labour-Market Tightness: https://factrail.ai/drivers/labour-market-tightness

## Sources

- https://www.vatican.va/
- https://www.britannica.com/biography/Michelangelo

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/mic-st-peters-1546