I believe I have the same booklet - Descendents of Sgt Henry Airth - it was compiled mostly by David Barr (there are a lot of Barr's in Renfrew).I also have a handmade booklet that is teh Descendents of David Barr and Agnes Airth.
I now live in Burnaby, BC - near Vancouver, but grew up in Renfrew Ontario - where the family all settled. I've been steeped in the family, but never thought that much about it until I got interested in the geneology stuff and started looking up the Airth's and McLaren's. I have other information - old books, bits and pieces of history from my Uncle and my Dad. I realize I have a wealth of information at home and I just need to get back east for a visit to get at it.
It is wonderful knowing that I have "family" spread out across the country. I am closest to Calgary and Edmonton right now, but have visited Georgia and it is beautiful. Jean