Do you know the township that your MacLeod brothers may have come from.
Margaret Mott's McMillan and MacLeod ancestors have been
identify. Her McMillans were from the 18.5 Lochiel, her gr gr grandfather was Miles McMillan and Gr Gr grandmother Harriet McLeod. Yes, she was of the same family that her (Margaret Mott's) grandfather John McLeod came from.
John McLeod's parents were Duncan McLeod and Mary McGillivray. They lived east 1/2 of 24.6 Lochiel.
I will keep an outlook for your MacLeods married to McMillans.