Hi, James Murch, younger brother of William Henry, is my ancestor (by marriage). He immigrated to the U.S. (Akron, Ohio) with his wife Sarah Carter of Devon, and they had a child, Sarah (Sadie) Murch, who married Walter Steward. There are many descendents of the Stewards that I can put you in touch with.
As for James, after he and Sarah split up, he sort of dropped off the face of the earth. His fate is one of my ongoing genealogical brick walls, and if you have any info on him, please let me know!