Okay, going through the Gibbons MS and looking at the multi-part pieces. Very few of them are anything like band arrangements of dance music. There are a lot of duets for two flutes, mostly marches, transposed to fit (I think) the clarinet - these are a military idiom going back to the 18th century. There are some duets for two fiddles, mostly slow tunes. "St Patricks Day in the Morning" and "Duke of Wellington" are dance tunes with a bass, but could be meant for piano. At the end of the MS, starting with "Calder Fair", there are a few dance-ish tunes for two melody instruments (clarinets?) and bass, but not what you'd want for a village hop.

This is an interesting document, but it isn't from the stereotypical church band gone secular. My guess is that was compiled by and for a few ex-soldier friends who got together privately to play current music and tunes they'd learned in the service.