Genealogy research sites such as ScotlandsPeople or Ancestry can help uncover more detail on residents and their families if required; useful if a particular resident did not appear in a census return. The information these contain include
• Censuses
• Birth, death and marriage records
• Church records
• Court, wills and land records
• Immigration records
The ScotlandsPeople Centre is the official Scottish government resource for family history research providing access to the Scottish birth, death, marriage and census records, Catholic parish registers, Coats of Arms, valuation rolls, wills and testaments.
https://www.scotlandspeople.gov.uk
Records can be searched on-line for payment.
The Ancestry resource can searched for free at Edinburgh Central Library or by paid subscription for on-line access.