David Stuart Chadwick (10 December 1941 – 20 December 2020) was an English musician and producer, best known as Chad Stuart of 1960's British Invasion duo Chad & Jeremy. Stuart has writing credits on four of the 11 Chad & Jeremy songs which entered the U.S. Hot 100. Stuart has sole credit for the duo's first hit, "Yesterday's Gone" (their only hit in the UK), and credits on "You Are She" (Stuart/Clyde), and "A Summer Song" (Stuart/Metcalfe/Noble), and "What Do You Want With Me" (Stuart/Clyde).