At the time when Horsfield told his son he was leaving the mother (Elizabeth) Frank and my grandfather were working at Monton (Salford) and not sure if Horsfield was working with them (labouring I think). They were waiting for the train to take them home to Shaw or thereabouts. I do know that at some stage Horsfield and Elizabeth did live in the Salford area, she ended up back in Royton/Shaw area. Whether he ever lived in Salford with her I don't know.
Apparently she bought him lots of equipment for roadworks and flagging which he seemed to do, all the stuff was later seen in her shed at her home in Royton.
Is this a mystery that can never be solved??? Of course, everyone is now dead apart from my brother who is 79 but he would have only been around 12 when Elizabeth died. He visited her with my father and remembers my father asking if she had ever "heard from Uncle Horsfield" she replied that he knocked on her door once but she ignored him and he went away. (That's when she showed my dad all the equipment in the shed. Now how true that is I don't know. Perhaps as he got older he wanted to go back?