[1] His ancestor was one of the many Scottish landowners who purchased a Nova Scotia baronetcy in 1624 as part of a state exercise to raise funds in exchange for titles.
[3] He had a home and legal practise on Castlehill in Edinburgh at the top of the Royal Mile close to Scotland's main law courts.
[4] In February 1751 he was elected a Senator of the College of Justice in place of the late James Grahame, Lord Easdale.
[6] In 1761 he inherited the estate of Murkle on the north Scottish coast from his cousin and friend Alexander Sinclair, 9th Earl of Caithness.
In 1766 after a contest to both George's and Alexander's will, the estates passed to a nephew, Sir John Sinclair of Stevenson (d.1789).