I can think of one possible explanation - that he worked on the Railways? Try this link - North Wales Railway History, it gives a good account of the dates of events in Railway History of North Wales and other areas. http://www.page27.co.uk/nwales/nwhist.htm The Irish Mail went to Holyhead for the first time in 1848 Crewe was and still is an important railway junction between North and South England. Caryl > My g g grandfather William Cox was an Engineer and lived in the following > communities in the years > > > > > > > > > > > > indicated.Holyhead(1848),Birkenhead(1851),Crewe(1851),Liverpool(1853),Birkenhead(1855) > and Crewe(1858).Do any listers have any suggestions as to what type of > employment could have required him to move around so much?When he did > finally settle down in Crewe he purchased a Ginger Beer Co. and it > continued as Cox Mineral water Co. for many years. > >