Born in 1788 the son of Peter Augustus Macirone (
Pietro Bonaventura Augusto Macirone), an Italian merchant and former school teacher living in England, Maceroni was sent in 1803, aged fifteen, to live in Rome with one of his uncles, Giorgio, who was then Post-Master General to
Pius VII. On his father's wishes, Maceroni was there apprenticed in the counting-house of the
Torlonia banking family. Being clearly unsuited to copying and book-keeping work however, he was soon more usefully employed by
Torlonia in dealing with the many English-speaking visitors to Rome, who sought the banker's services. In 1804, in the company of the architect
Robert Smirke, who was then conducting a
Grand Tour, Maceroni made the journey on foot, and over several days, from
Tivoli to
Naples, along the mountain paths of the Apennines and passing through
Palestrina,
Cori,
Arpino and
Monte Cassino before descending to
Capua and
Naples; Smirke having taken many sketches of the classical remains that had come across along their route. At the monastery of
Monte Cassino, they saw on display a huge thigh-bone purportedly of
St. Christopher, but which both Maceroni and Smirke suspected to be that of an elephant or mammoth. Maceroni became a Colonel of Cavalry and served as
aide de camp to
Joachim Murat, the King of Naples during the
Napoleonic Wars (later writing his biography) and fought with the
Spanish insurgents in 1822-23 during the
Trienio Liberal. While serving as an aide to Murat, Maceroni introduced the Neapolitan Court to archery, cricket, and the concept of weekly dining parties. Unfortunately, cricket did not survive his departure. ==Maceroni's steam carriage==