Another June here! Henry & John's mother, Elizabeth Stewart, was the older sister of my gg-grandmother, Margaret Stewart.
Their father James Stewart was also a Mason, who moved to Logie Coldstone from Mortlach, Banff, after being declared a 'fugitive' there in 1816. Don't ask me what his crime was, because there's a blank in the National Archives record!
James Stewart was also a twin, and it certainly seems to have run in the family from other lines I've seen on ancestry.
James's wife, Elizabeth Blair, had a brother William, who was fiddler to Queen Victoria, so you can't say we don't have interesting connections!
Please message me if you need any more info on the Stewart line.