On her website, Mary Humphreys published the manuscript of William Clarke, a 19th century East Anglian musician. Little is known about Clarke but judging from the music, which never drops below middle C, Mary surmises he may have played the flute. At any rate, the manuscript offers some very nice tunes from 19th century rural England. It was transcribed to standard musical notation and abc by Lyn and Peter Law, and their work shouldn't go without appreciation. The page containing the manuscript is here. The Laws own the copyright so please make appropriate arrangements if you plan to use the music.