Beginning of week I'll get copies to you to info.
Now I have found 2 siblings for your Donald b 11 Feb 1829.
(1) Mary Dewar b 11 Oct 1834 at 24.7 East Hawkesbury Township in Prescott County. (2) Ann Dewar b 19 Sept 1837 of 24.7 East Hawkesbury Twp.
At time of transcribing the info the chap doing it shows a More Dewar b 22 March 1826 with parents as Roderick Dewar amd Ann McLeod. They were of 24.7 East Hawkesbury Twp. In the listing for Donald b 1829 the transriber writes that maybe McLeod name incorrect and should be McLellan. I guess the placing of East Hawkesbury had him wondering.