Hello; just discovered your website while searching for info on my great Grandmother Margaret Costello. I recently found her obituary in the Ottawa Journal, which states that before her marriage she was "a school teacher at the Montreal School and also at Leitrim". She turned 18 while still at home in Freelton Ontario, in 1891, and married Albert Blais in 1905. I assume her teaching career would have been during those 14 years. Have you found any information on either the schools she taught at or Maggie herself? I would so appreciate any help you could give!