...Their daughter Margaret, born in 1834 is my great grandmother. Margaret Cochrane married Robert Stewart and they eventually settled near Greymouth in NZ.
Did Margaret come back to Scotland? Just wondering about this entry in 1901:
Mary A Cochran 69 Living on own means b. Glasgow
Margaret Stewart 66 Sister Living on own means b. Glasgow
Address: 70 West Clyde St, Helensborough, Row Dunbartonshire
Monica
Added: The middle initial of daughter Mary's name was Arrol. Might connect with important family surname. The other middle name surname which is showing looks to be Peter.