John William Hartley constructed a small weaving shed in Glusburn and a John Horsfall came over from Oxenhope to learn his trade with him. John Horsfall then married John William Hartley's daughter Grace in 1844 and at first became his partner and then the sole owner of the weaving shed.
John William Hartley built a small weaving shed in Glusburn, and John Horsfall came from Oxenhope to learn his craft from him.  John Horsfall later married Hartley's daughter Grace in 1844, initially becoming a partner before taking sole ownership of the weaving shed.