Knapp was the par­ish clerk at St. John’s Church in Poole for four de­cades. His works in­clude:

• A Sett of New Psalms and An­thems in Four Parts (Lon­don: 1738)
• New Church Mel­o­dy and a Sett of An­thems, Psalms and Hymns in Four Parts (Lon­don: 1753)

Sources

Music

1. Spetisbury
2. Wareham