Galileo Galilei was born in Pisa (then part of the Duchy of Florence), Italy, on 15 February 1564, the first of six children of Vincenzo Galilei, a famous lutenist, composer, and music theorist, and Giulia (née Ammannati), who had married in 1562. Galileo became an accomplished lutenist himself and would have learned early from his father a scepticism for established authority, the value of well-measured or quantified experimentation, an appreciation for a periodic or musical measure of time or rhythm, as well as the results expected from a combination of mathematics and experiment. Three of Galileo's five siblings survived infancy. The youngest,
Alessandro Galilei Roman artistic circles but was admired later in the century by French and British neoclassicists. Galilei also built the more conventionally Baroque façade for San Giovanni dei Fiorentini (1734), where the cornice between lower and upper stages breaks forward at center and ends, and niches between engaged Corinthian columns and sculptural detail all provide the Baroque light-and-shade. He died in Rome. Alessandro Galilei Alessandro Maria Gaetano Galilei (25 August 1691 – 21 December 1737) was an Italian mathematician, architect and theorist, a member of the same patrician family of Galileo. Born in Florence, he received architectural and engineering training from