The War of 1812 at Library and Archives of Canada included the War of 1812: Board of Claims for Losses, 1813-1848...:
There's an index of claims in a separate source here at the Global Genealogy site. [William Howard's name was listed as being on pages 48 and 161]
Image 585 was this 48 or 161?
2 DW Class
[Class 2 is Damage done by the Enemy]
A horse taken by Indians...clothing...
William Howard (probably ours) postmarked an 1832 letter at Yarmouth.