Arnolfo was born in 1232 at Colle, in the Val d'Elsa. He was a sculptor as well as architect, the assistant of Niccola Pisano at Siena, and the maker of the tomb of Cardinal de Braye at Orvieto. This tomb is remarkable as the earliest instance of the canopy withdrawn by attendant angels from the dead man's form, afterwards so frequently adopted by the Pisan school.
Giov. Villani, viii. 26.
See Milizia, vol. i. p. 135. These walls were not finished till some, time after Arnolfo's death. They lost their ornament of towers in the siege of 1529, and they are now being rapidly destroyed.