Willem de Fesch (Dutch pronunciation: [ˈʋɪləm də ˈfɛs]; 1687 in Alkmaar – 3 January 1761) was a virtuoso Dutch violinist and composer.
Thereafter he moved to London where he gave concerts and played the violin in Handel's orchestra in 1746.
His works included the oratorios Judith (1732) and Joseph (1746), as well as chamber duets, solo and trio sonatas, concertos and part songs.
Both oratorios were thought lost until 1980 when a copy of a manuscript of Joseph was found in London's Royal Academy of Music.
[1] De Fesch's music was influenced by the Italians, particularly Vivaldi, as well as Handel.