‘I will carry with me the best architect in Europe.’ With these bold words Robert, first Viscount Molesworth, announced to his wife his arrival in Ireland in the company of the young Italian architect and engineer Alessandro Galilei in May 1717. Lord Molesworth could not know that, twenty years later, Galilei would be indeed one of the best-known architects in Europe, after having built in Rome, to the order of Pope Clement XII Corsini (1730–40), the facade of San Giovanni in Laterano (St John Lateran), the Cappella Corsini in the same church and the facade of San Giovanni dei Fiorentini.Galilei was born on 25 August 1691, in Florence, the eldest son of the notary Giuseppe Maria Galilei and his wife Margherita Merlini. The Galilei family could trace their lineage to the Buonaiuti, who in the fourteenth century twice held the post of ‘Gonfaloniere della Giustizia’, then the most important position in the city government. They took the surname Galilei from the last Gonfaloniere in their family, the master of philosophy and medicine, Galileo (early fifteenth century). Even into the sixteenth century, members of the family belonged to the town council. The most famous bearer of the name was without doubt Galileo Galilei (1564–1641), from whom Alessandro was not directly descended but to whom he was remotely related. Although Alessandro’s father, Giuseppe, who in 1707 and 1711 was Proconsul of Notaries, counted himself as one of the nobili, the standing of the old patrician families had been considerably reduced under the Medici Grand Dukes because they did not actually hold a landed title. Financial decline seems also to have damaged the prestige of Alessandro’s branch of the family.
