I realise that this thread is focused on the Stuarts and I don’t wish to distract from that focus but I’m also interested in another family of stonemasons of that time. My research is about Robert McDonald b.1839 who was also a Mason (his father Robert b.1804 was also a Mason). In particular I’m trying to find the whereabouts of “Millburn aka Mill Burn” in the Abernethy & Kincardine area which was the family home of Robert McDonald b. 1839? It is shown on the 1891 census records next to “Glenlochy” not far from Tomintoul which I have found on maps of that time across the River Avon from the Kirkmichael church. I believe Millburn was a farmstead or croft in the Bridge of Brown/Tomintoul area.
Is this the family of Robert McDonald and Jane/Jean Grant, all of whom were baptised in the parish of Kirkmichael?
In 1841 they were at Strongavy; in 1851 and 1861 at Lower Tombreck, both in the parish of Kirkmichael.
Tombreck/Tombreac is in Glen Brown, upstream from Bridge of Brown. See
http://maps.nls.uk/geo/explore/#zoom=15&lat=57.2553&lon=-3.4501&layers=5&b=1 - if you move the map around you can see other places listed in the same enumeration district (Fodderletter, Burnside, Lyngary).
Mains of Glenlochy is on the left bank of the river, in the next parish (Abernethy and Kincardine) and county (either Moray or Inverness-shire - the Statistical Account says, "
It is a little remarkable, that at the south east point of this parish, between Glenlochy and Glenbrown, the shires of Inverness, Murray and Banff meet; so that when standing on the Bridge of Brown, one may throw a stone in to any of the three counties").
Sròn a' Chathaidh is south-east of Tombreck; in the second edition of the six-inch map it is anglicised as Stronachavie.
However I can't see anywhere that looks like Millburn (or Allt a' Mhuilinn, which would be the Gaelic version of Millburn). There are a Midtown and a Milltown.