http://image.invaluable.com/housePhotos/Waddingtons/30/430530/H1012-L57151411.jpg

http://www.invaluable.com/auction-lot/royal-letters-patent-grant-of-arms-to-knight-comp-1-c-527b8e080a#.U0ir3KIS5kx

http://www.biographi.ca/en/bio/brock_isaac_5E.html

Nice find.

Here is the corresponding announcement in The London Gazette regarding this (posthumous) grant of supporters.

This document is wonderful to see. Our ancestor who served in the 2nd Regiment of York Militia fought at Queenston Heights .