I was just at Queenston Heights and noticed this peculiar last line of the inscription on his monument. I'm not turning up anything in a search. Did the king hate him? Why? And how does a public monument built in the 1800's come to say something like that?
The word "Deplore" basically means the same thing today as in 1812, but it is used in a slightly different connotation. I believe in this case it means "wept over", rather than "strongly disliked"
To deplore something was originally to weep over it, then regret deeply. The sense weakened over time until in the mid 19th century it was merely to disapprove strongly.
http://www.oxforddictionaries.com/us/definition/american_english/deplore
I don't know whether or not this is a conventional expression or that officer had actually known the King (I guess the former.)