Michelangelo
Michelangelo was born on 6 March 1475 in Caprese, known today as Caprese Michelangelo, a small town situated in Valtiberina, near Arezzo, Tuscany. For several generations, his family had been small-scale bankers in Florence; but the bank failed, and his father, Ludovico di Leonardo Buonarroti Simoni, briefly took a government post in Caprese, where Michelangelo was born. At the time of Michelangelo's birth, his father was the town's Judicial administrator and "podestà" or local administrator of Chiusi della Verna. Michelangelo's mother was Francesca di Neri del Miniato di Siena. The Buonarrotis claimed to descend from the Countess Mathilde of Canossa—a claim that remains unproven, but which Michelangelo believed.
Giambologna
Jean de Boulogne was born in Douai, Flanders (now in France), in 1529. After youthful studies in Antwerp with the architect-sculptor Jacques du Broeucq, he moved to Italy in 1550 and studied in Rome, making a detailed study of the sculpture of classical antiquity. He was also much influenced by Michelangelo, but developed his own Mannerist style, with perhaps less emphasis on emotion and more emphasis on refined surfaces, cool elegance, and beauty. Pope Pius IV gave Giambologna his first major commission, the colossal bronze Neptune and subsidiary figures for the Fountain of Neptune (the base designed by Tommaso Laureti, 1566) in Bologna. Giambologna spent his most productive years in Florence, where he had settled in 1553. In 1563 he was named a member ("Accademico") of the prestigious Accademia delle Arti del Disegno, just founded by the Duke Cosimo I de' Medici, on 13 January 1563, under the influence of the painter-architect Giorgio Vasari, becoming also one of the Medicis' most important court sculptors. He died in Florence at the age of 79; the Medici had never allowed him to leave Florence, as they rightly feared that either the Austrian or Spanish Habsburgs would entice him into permanent employment. He was interred in a chapel he designed himself in the Santissima Annunziata.