Hi Ron . If you Google 'digital,library,McGill.ca-CountyAtlas' you should find a site sponsored by McGill U. on which they have digitised , what are commonly called the "Beldan Atlas Maps" , circa 1878 . Locate and call up the map for Charlottenburg Glengarry . Once you have the map you can enlarge it for search purposes . Cashion's Glen will be found towards the south west corner . The South Branch of the Raisin River runs in a west to east direction south of Cashion's Glen . South of this River is Street Road where my Ancestor John McLeland / McLennan received Lot 23 ; some ninety years later [when this map was made] there is a nesting of McLennan descendants around this said Lot 23 . Directly across this river [on north side] is South Branch Road where you will find a nesting of McLellan who may be your lost relatives .