I don't think his work was particularly extensive - he seems to have been largely overlooked by the scholars - the index promises three pages in Harker's ''Fakesong' but only delivers a passing reference - maybe just as well, considering the low regard Harker has for 'Fakesong' collectors.   
There's only passing references to him in David Gregory's and D K Wilgus's works on the early collectors.
His 'Banks of Green Willow' is, in my opinion, the most exquisite piece of English classical music ever composed.
I seem to remember our owning a thin booklet published by EFDSS (maybe a reprint from one of the Journals) on his work, but I'm buggered if I can find it
It would be good to learn more about his work.
Jim Carroll