Keith and Peter,
My name is Todd Girdwood. My mum was Jean Isabel McCrae of Guelph. Her father was Harold "Red" McCrae of Guelph. I have a family tree kicking around done by my aunt Jean (deceased), once married to my uncle Don McCrae, now of Waterloo. Not sure if Catherine would be on it, but I could take a look. I'm only on a trial Ancestry pass... Don't know if I'll renew. You can contact me at toddcyd@sympatico.ca . Colonel John McCrae is on a branch of our tree.