I must have the ranks mixed up.
summary so far is thus:
Maj. John McIntosh (1744-1827) & Catherine McPhail
Capt. John McIntosh (1776-1862) & Mary McDonald
Donald McIntosh (1807-?) & Mary Stuart
Hugh McIntosh (1832-1921) & Christy McDonald
Alexander McIntosh (1877-1934) & May Walsh
I also have a transcription of a newspaper article - origin unknown but seems to be from a Cornwall paper circa 1895 -which describes the early history of Maj. John's family. I'll try to get this to you somehow.