Don't have a m/s for the wife, but notice the double surname for the grandson Alexander:
1871
Alexander Cant Head Married Male 62 1809 Saw Miller Rafford, Elgin or Moray, Scotland
Margaret Cant Wife Married Female 60 1811 - Morayshire, Scotland
Alexander Cant Gordon Grand Son Unmarried Male 10 1861 Scholar Forres, Morayshire, Scotland
Margaret Cant Grand Daughter Unmarried Female 4 1867 - -
Charles Kerr Grand Son Unmarried Male 1 1870 - Forres, Morayshire, Scotland
House number 3
House name Chapelton Moss
Street -
Parish Forres
Town -
City -
County Moray
Country Scotland
Registration district Forres