Biography
Petrus Wilhelmi de Grudencz (Polish: Piotr z Grudziądza) (ca. 1400 – ca. 1480) was a medieval composer, the author of songs and motets. Less than twenty of his works have survived, including Panis, panis pange patribus tantum and Kyrie fons bonifitatis.
Biography text from Last.fm, available under CC BY-SA.