Jato
This may be a small offering,in my home town in Lanarkshire,there is Murdostoun Castle, Allanton estate which was owned from the 1800s by Robert Stuart/Stewart, an ex provost of Glasgow,then by his son J C Stuart/Stewart,the castle was sold in the 1980s I think. so there must be some history of those Stuart/stewart,maybe Lanarkshire Family History have some info on them.