[2] He was the fifth son of Sir John Drummond of Machany who had been outlawed in 1690 for his close links to the exiled family of the deposed King James II in France.
[3][4] His older and younger brothers both took an active part in the 1715 Jacobite rebellion and were made prisoners at Sheriffmuir.
In 1745 the Young Pretender, Charles Edward Stuart raised his Standard at Glenfinnan and one of the first adherents to this new Jacobite rebellion was Andrew's older brother Strathallan, who went on to command the rebel forces in Scotland when the Prince invaded England and later commanded the reserve cavalry at the fateful battle of Culloden in April 1746, during which he was killed.
It did recommence trading again and the directors of the company were to include not just the descendants of Andrew but also of the Viscount Strathallan.
The ownership of the bank passed to his son John and his nephew Robert Drummond of Cadland.