Do you have the younger Alexander's marriage cert? (To Mary Ann Rickards/Williams in 1864.) If so, what is his father's occupation?
Alexander J gives his birthplace as East Stonehouse on the 1851 and 1871 censuses - have you been able to look at the parish registers?
His birth is too early for civil registration, but his death isn't showing up easily - presumably between 1871 (when he is a "patient" in hospital) and 1881, when Mary Ann is a widow.
