Agnolo di Cosimo di Mariano, called Bronzino, born on 17 November 1503 in Florence where he studied under Raffaellino del Garbo before becoming a favoured pupil of Pontormo c.1518. Except for a period at Pesaro 1530-2, he spent his life in Florence enjoying extensive Medici patronage.
He excelled in portraiture, but also undertook decorative commissions, such as the frescoes for Eleonora di Toledo's chapel in the Palazzo Vecchio 1541-6, and histories. He had some standing as a poet and his literary works include twelve sonnets written on the death of Eleonora di Toledo in 1562. He died in Florence on 23 November 1572.