father's mother's father's father's father's mother
I only know about Isabella because she was named on her son's death certificate - see link to James Johnston below
Name
Isabella Malcolm
Date and place of birth
unknown
Names of parents
unknown
Date and place of baptism
unknown
Details of each of his or her marriages
Married David Johnston, details unknown
Occupation(s)
unknown
Addresses where they lived
probably in Aberdeenshire, Scotland
Date, place and cause of death
Date and place of burial
unknown
Details of will / administration of their estate
unknown
Memorial inscription
unknown
link to son, James Johnston:
http://www.genealogistsforum.co.uk/f...James+Johnston