Ferguson was elected as the Member of Parliament (MP) for Kirkcaldy Burghs at a by-election in 1841.
Ferguson resigned his seat in the House of Commons in 1862, by the procedural device of accepting appointment as Steward of the Manor of Hempholme.
[3] In 1864, Ferguson inherited the baronies of Novar in Ross-shire and Muirton, Morayshire, conditional upon his taking the additional surname Munro.
His son, Ronald Munro Ferguson, 1st Viscount Novar, served as Governor-General of Australia and Secretary of State for Scotland.
This article about a Liberal Member of the Parliament of the United Kingdom representing a Scottish constituency is a stub.