hi
i ve gone through the 1811 tennants list and this is what i ve found The MacArthurs , Gilchrists, Calders all mostly in kildalton but there is others scattered around the Island,
Mceachern, Darroch, Currie, mostly in the Kilmeny and central area of the Island,
those Mceacherns you found in edgar most of the ones i ve checked and can identify
are all from around the same area as Tirvaigain, so is that Euphemia Darroch