The Sienese Visionary: Ugolino Lorenzetti and the Dawn of Renaissance Allegory Ugolino Lorenzetti, a name often overshadowed by his more celebrated brother Ambrogio, stands as a pivotal figure in the transition from Medieval artistic conventions to the burgeoning Renaissance spirit. Born in Siena around 1290 – though precise dates remain elusive – Ugolino flourished during a period of immense cultural and political upheaval in Italy.…