Hi Shaun, Nineteenth-century usages for kin relationships were sometimes different from those used today. Marriage relationships appear to cause particular problems. A brother-in-law or son-in-law could be described as a 'brother' or 'son', while a 'daughter-in-law' might mean a step-daughter, or 'son-in-law a step-son. Similarly, the offspring of married children resident in the household were sometimes called 'son' or 'daughter' rather than grandchild; referring to their parents rather than the head-grandparents. Sometimes the presence of an unmarried daughter of child-bearing age in the household will raise the suspicion that the infant 'sons' and 'daughters' of elderly parents might be illegitimate grandchildren. Regards Stan Mapstone