HONOURS FROM SCOTLAND
Heritable Usher of the White Rod of Scotland
The Inverneill Papers of 1791 (IP05 pages 357 and 358) note that Archibald Campbell of Inverneill paid £12,100 (or today, £677,963) to become a "Heritable Usher of the White Rod for Scotland." This returned an annual pension of £250 (that is, £13,569.53 today).
What is a "Heritable Usher of the White Rod for Scotland"?
One source, "Facts about Edinburgh" says that it is Scotland's equivalent to England's Black Rod, the gentleman who raps on the door of the House of Commons and demands entry on behalf of the monarch.
However, a more interesting - and much older - explanation is Martin Martin's story of an ancient custom of the chiefs of the western islands of Scotland:
According to Colin Campbell in his "Origins of the Campbells of Inverneill," Sir Archibald acquired this office by charter dated 2 July 1790
The following page has a discussion of Campbell's Coat of Arms, and the Clan Tearlach.