Laurance le Grant laid the foundation stone when he became sheriff of Inverness around 1258 ; the land in the Spey Valley was acquired by a successor named Iain through marriage. As a reward for his loyalty to King William of Orange , he created a semi-autonomous principality, whereupon the grants from the Spey region, unlike those from the Great Glen , remained anti- Jacobite even during the Jacobite uprisings .
The motto of the clan is Stand almost ("Steht stead").
William Fraser: The Chiefs of Grant. 3 volumes. Edinburgh 1883. (Vol. 1: Memoirs Internet Archive ).
Archibald Kennedy, Earl of Cassillis: The Rulers of Strathspey. A History of the Lairds of Grant and Earls of Seafield. Inverness 1911. ( Internet Archive ).
Isabel Frances Grant: The Clan Grant. The Development of a Clan, with Tartans and Chief's Arms in Color, and a Map. Johnston & Bacon, Edinburgh / London 1955.
Trevor Grant, Lord Strathspey: A History of Clan Grant. Phillimore, Chichester 1983, ISBN 0-85033-442-X .
Alan Bold: Scottish tartans. Pitkin Pictorials, London 1978, ISBN 0-85372-245-5 , ( Pitkin "Pride of Britain" Books ).