Francesco Talenti was a Tuscan architect and sculptor who worked mainly in Florence

Florence

Florence is the capital city of the Italian region of Tuscany and of the province of Florence. It is the most populous city in Tuscany, with approximately 370,000 inhabitants, expanding to over 1.5 million in the metropolitan area....

 after 1351. He is mentioned working at Orvieto Cathedral in 1325. In the 1350s he completed the two middle storeys of Giotto's Campanile, and two doorways, the Porta dei Cornacchini and the Porta del Campanile, respectively in the north and south sides of the Florentine Duomo. In 1351 he succeeded Andrea Pisano

Andrea Pisano

Andrea Pisano , also known as Andrea da Pontedera, was an Italian sculptor and architect.-Biography:Andrea Pisano was born at Pontedera, where he also died....

as director of works of the cathedral. The cathedral's famous dome is first mentioned in 1357, but opinions differ whether Talenti was responsible for its inclusion or not. Talenti enlarged its structure by redesigning the apses and prolonging the nave, making the church the largest ever built in Europe so far.