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.
In Glusburn, John William Hartley established a small weaving shed. John Horsfall traveled from Oxenhope to learn the craft under Hartley's tutelage.  Horsfall later married Hartley's daughter Grace in 1844 and became both partner and sole owner of the weaving shed.