I think the Mary Scott you mentioned was living with Agnes Muir Gilbert and James Gilbert as a helper. 22 years of age.
John Muir’s family, as I have found so far were the usual names, Agnes, Archibald, William, Mary S.(Scott), Margaret, Jannet, and Jane.
Black Archie is my grandfather’s father.
Or, was the Agnes Muir living with John, the wife of Mat Muir.
What I don’t understand is if the other Muirs from Riverfield, or Howick or NewFoundOut, Quebec.
I don’t know how Arthur Muir b, 1825 fits in, or Archibald Muir that married Margaret Blue NorthGeorgetown
Thanks for the conversation!