Perhaps someone can assist: the chronology I have for Mary Campbell is thin and seems suspect. I am "working upwards" from Joseph Thomas Campbell and in merging ended up with this.
Daughter of Thomas Blackall and Mary Blackall
Wife of Joseph Campbell
Sister of Samuel Blackall
1798 Birth of Mary
London, Greater London, England, United Kingdom
November 5, 1820
Age 22 Marriage of Mary to Joseph Campbell
Uitenhage, Port Elizabeth, Eastern Cape, South Africa
June 1, 1822 Age 24
Birth of May not belong under Joseph Campbell???
Grahamstown, Western District, Eastern Cape, South Africa
1825 Age 27
Birth of Mary Elizabeth MacKay
1833
1833
Age 35 Birth of Joseph Thomas Campbell
Scotland, United Kingdom
1838
1838
Age 40
Birth of Isabella Margery Campbell
No location
Death No date/Location