Guglielmo de' Grigi, also called Il Bergamasco, Italian architect and sculptor mostly active in Venice. He was chief assistant to the architect Pietro Bon (ca. 1517). His noteworthy projects include the altar of Scaligera Verde in Santi Giovanni e Paolo (ca. 1524), the high altar at San Salvatore (completed 1534), Palazzo dei Camerlenghi, and the Miani (Emiliani) Chapel at San Michele in Isola, north of Venice. His son, Giovanni Giacomo de' Grigi was also an architect. //