Bartolomeo Picchiatti

He took charge of the excavating the Regi Lagni, planned by Fontana but only begun in the 17th century, before in 1634 the engineer Tommaso Alappio (?

In 1620 Bartolomeo completed San Giorgio dei Genovesi and in 1621 designed the gateway to Palazzo di Sangro (constructed by Giuliano Finelli) and the small Santuario della Madonna dell'Arco.

1621 also saw him inherit the building site for San Carlo alle Mortelle - he also went on to design its college and thus became a trusted architect for the Barnabites.

Following Giulio Cesare Fontana's death in 1627 he also took over as official engineer to the royal court, a post his son also later assumed.

He died in 1643 and all his outstanding projects were assigned to Onofrio Antonio Gisolfi, who until 1656 took over the role of royal engineer.