Margaret shows up on the 1851 census in the family of John Niven(s) as his daughter born Durris and aged 5yrs. I cant find a birth in Scotlands People or any other site or any link to John Nivens who was born 1822 Durris. There is a birth 1868 for John Nivens Wright which Im thinking is her son. Her address at that time was Dhualt Glen Durris.