Knappは40年間、プールにあるセント・ジョン教会の教区牧師だった。彼の著作には以下のようなものがある。 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) As evidence that intra-congregational sniping is not a new phenomenon, witness the following verse, contributed to the London Magazine by one H. Price in 1742 (the George Savage referred to in the last line was the sexton at Knapp's church):
