In 1436, Fra Angelico was one of a number of the friars from Fiesole who moved to the newly built convent or friary of San Marco in Florence. This was an important move which put him in the centre of artistic activity of the region and brought about the patronage of Cosimo de' Medici, one of the wealthiest and most powerful members of the city's governing authority (or "Signoria") and founder of the dynasty that would dominate Florentine politics for much of the Renaissance. Cosimo had a cell reserved for himself at the friary in order that he might retreat from the world.