my grandmother was
Janet Jennie McBEAN
Birth 14 Jan 1900 in Lambton, Ontario, Canada
her father was
James Arthur McBean
Birth 8 September 1838 in Daviot and Dunlichty, Inverness Scotland
So Janet/Jennie was born when her father was 61 years old? How sure are you of this?
his oldest brother
William Mcbean
Birth 13 OCT 1836 in Daviot, Invernessshire, Scotland
Death 26 Nov 1918 in Daviot, Aberdeenshire, Scotland
That rings alarm bells for me. Daviot in Aberdeenshire is quite a distance from Daviot in Inverness-shire. I can see in the SP index a death of a William McBean, aged 82, in
Daviot and Dunlichity, Inverness-shire, not Daviot, Aberdeenshire. Where did the Aberdeenshire reference come from? Indexed or transcribed by some web site that doesn't know that there are (at least) two different places called Daviot? Never trust anything you find online unless it's an image of an original document - and even then, be wary.
Mary's parents were:
...
Margaret MacIntosh
Birth 1791 in Daviot and Dunlichity, Inverness, Scotland
Death 1857 in Daviot, Inverness, Scotland
Get her death certificate from Scotland's People. It should tell you the names of her parents including her mother's maiden surname.