Girolamo Rainaldi was an Italian architect who worked mainly in a conservative Mannerist style, often with collaborating architects. He was a successful competitor of Bernini. His son, Carlo Rainaldi,

Giacomo della Porta was an Italian architect and sculptor. Most likely born in Genoa or Porlezza, Italy, his work was inspired by famous Renaissance artists such as Michelangelo and Giacomo Barozzi da