I believe Mark of Honor is more about loyalists settling in Cataraqui/Kingston ON rather than in Glengarry. Take a look at the settlement & victuling lists posted on the Glengarry County Genweb, and I suggest a look at the Johnson (Mohawk) Rent Rolls (a link is on GC Genweb) to see if you can locate. KRNNY is one military group Mohawk loyalists joined, another is the 84th Regt. Look for MacLellan as well as MacLennan, just in case. Have you contacted Clan MacLennan? I bought a CD of genealogy lines from them several years ago, so likely still available, though I can't promise it will help.
Happy hunting
Best regards,
Evelyn Goulet, Castle Tioram
Finlaggan Councillor
Clan Donald International
Host, Glengarry County Genweb