Ottaviano Nonni

Il Mascherino
The Mascarino Staircase in the Quirinal Palace
Born
Ottaviano Nonni

1536
Died6 August 1606(1606-08-06) (aged 69–70)
EducationGiacomo Barozzi da Vignola
Known forSculpture, painting, architecture
MovementMannerism
PatronPope Gregory XIII

Ottaviano Nonni (1536 – 6 August 1606), called Il Mascherino, was an Italian architect, sculptor, and painter born in Bologna. He was the architect of the Quirinal Palace under Pope Gregory XIII. His other works include the churches of San Salvatore in Lauro (1591), Santa Maria in Traspontina, the Bandini Chapel in San Silvestro al Quirinale, and the oval plan-design for the church of Santo Spirito in Sassia.