I think I may have come across my first link with my family or at least there may be a couple of coincidences. I am still very much in the infancy of my research but at least one non-Crewdson name matches. Having said that the dates don't. My great great grandfather was called Richard Crewdson and he married Ann Nelson however this was around the 1870's and it was in Barrow in Furness. The family moved down to Manchester in the late 1800's but some strange events occured where the family may have moved back up to Ulverston before returning. It would be good if you could get in touch.