Megginch Castle is a 15th-century castle in Perth and Kinross, in central Scotland.
 It was the family home of the late Cherry Drummond, 16th Baroness Strange.
 It is now occupied by Lady Strange's daughter Catherine Star Violetta Herdman and her husband.
Duncan Davidson (1733 – 15 August 1799) was a Scottish merchant and Member of Parliament.
John Coutts (1699–1750) was a Scottish merchant and banker, Lord Provost of Edinburgh in 1742.
David Barclay of Cheapside (1682–1769) was a Scottish merchant and banker.
Sir John Gladstone of Fasque, 1st Baronet, FRSE LLD (11 December 1764 – 7 December 1851) was a Scottish merchant, slave-trader, Member of Parliament, and the father of the British Prime Minister William Ewart Gladstone.
 Through his commercial activities he acquired several large plantations in Jamaica and Guyana, worked initially by enslaved Africans.
 As a result of the Slavery Abolition Act 1833 which abolished slavery in the British Empire, Gladstone expelled most African workers from his estates and imported large numbers of indebted Indian indentured-servants, through false promises of providing them schools and medical attention.
 However, upon arrival they were paid no wages, the repayment of their debts being deemed sufficient, and worked under conditions that continued to resemble slavery in everything except name.
 Active in politics he worked to secure compensation from the British Government for "property losses" (in this case slaves) incurred as a result of the Slavery Abolition Act 1833 and eventually received £106,769 (modern equivalent £83m),
Sir Donald Horne Macfarlane (July 1830 – 2 June 1904) was a Scottish merchant who entered politics and became a Member of Parliament (MP), firstly as a Home Rule League MP in Ireland and then as Liberal and Crofters Party MP in Scotland.
Adam Drummond (31 January 1713 – 17 June 1786), 11th of Lennoch and 4th of Megginch in Perthshire, was a Scottish merchant, banker and Member of Parliament.
James Oswald (2 May 1779 – 3 June 1853) was a Scottish merchant and Member of Parliament (MP) for Glasgow.
Andrew Dryburgh Provand (23 March 1838 – 18 July 1915) was a Scottish merchant stronly linked to Manchester and also a Liberal Party politician who served as the Member of Parliament (MP) for Glasgow Blackfriars and Hutchesontown from 1886 to 1900.
Sir James Steuart of Coltness (1608 – 31 March 1681) was a Scottish merchant, banker, landowner, politician and Covenanter.

Question: Which Scottish merchant, banker and Member of Parliament lived in what is now occupied by Lady Strange's daughter and her husband?
Answer: Adam Drummond