Mary Fraser, d/o John Fraser and Helen Grant was born about 1823. She reportedly married a D. Mackenzie and had a daughter Mary Helen Mackenzie, who married a George Brodie Clark and had a son Ernest Herbert Brodie Clark. No dates for this were provided in Major Alpin's Ancestors and Descendents 1904, the source of this info. I am unable to verify any of this, or find dates.
The IGI has many Mary Fraser -- D Mackenzie marriages.
The IGI gives two Mary Helen Mackenzies, both d/o Donald Mckenzie and Mary Fraser, one b 1853 in Inverness and the other 1847 in Lochbroom, Ross&Cromarty. Both are possible
There is an Ernest Herbert B Clark born in Middlesex in 1879 and the census record for 1891 is tantalizing; his parents are George Brodie Clark, solicitor, and Mary H B Clark, but she was born in Australia. It`s not impossible that Mary Fraser and D Mackenzie went to live in Australia, but it does seem unlikely that the daughter would have come back.
Any help or insights would be appreciated.