James Montgomery was a Scottish-born hymnodist, poet and newspaper editor. He was concerned with humanitarian causes such as the abolition of slavery and of exploitation of child chimney sweeps.
Librarian note: There is more than one author in the Goodreads database with this name.
Finally got around to reading this massive compilation of texts concerning the condition of chimney sweeps. If ever you find yourself writing about about children or labor in the nineteenth century, check it out. It's a rich and fascinating source.