sentences:  The name "San Lorenzo" may also refer to the new museum now opened on the premises, as well as to the ancient Roman market beneath the church itself, the Macellum of Naples.The church's origins derive from the presence of the Franciscan order in Naples during the lifetime of St Francis of Assisi, himself.The site of the present church was to compensate the order for the loss of their earlier church on the grounds where Charles I of Anjou decided to build his new fortress, the Maschio Angioino in the late 13th century.