Mezue ahịrịokwu na-esonụ: Ndị Buchan Barons nke Auchmacoy bụ ndị na-akwado eze na ndị na-akwado House of Stuart. Thomas Buchan bụ nwa nwoke nke atọ nke onye isi James Buchan nke Auchmacoy, bụ onye ọrụ agha lụrụ ọgụ na France na Holland. O jere ozi na Douglas's Scots Regiment nke a zụlitere maka eze France. N'afọ 1686, James nke Asaa nke Scotland họpụtara ya ka ọ bụrụ onye ọchịagha na ndị ọchịagha Earl of Mar. O mechara sonyere John Graham, 1st Viscount Dundee. Mgbe e gbusịrị Dundee na
Agha nke Killiecrankie na 1689 Buchan họpụtara dị ka ọchịagha nke ndị agha Jacobite niile na Scotland wee nata ọrụ ya n'aka eze na Ireland. Ọchịagha Buchan ji ndị agha ya dị otu puku na narị abụọ na-aga ụkwụ na ụkwụ kpagbuo onye iro ahụ. Otú ọ dị, na 1 May 1690 ọ tụrụ ya n'anya ma merie ya site n'aka ndị agha siri ike nke gọọmentị n'okpuru General Hugh Mackay na Agha Cromdale. Otú ọ dị, Buchan gbapụrụ ma sonye na ndị Farquharson nke gbara ya ume ka ọ gaa agha ọzọ ma ha si Abergeldie gaa Mearns. Onyeisi ndị agha Forbes bụ onye nwere ndị agha ịnyịnya siri ike megidere ya, mana Buchan gbasasịrị ndị agha ya iji nye ọdịdị nke ọnụọgụ ọnụọgụ na Forbes laghachiri Aberdeen, na-akpata ụjọ na obodo ahụ. General Hugh Mackay na ndị agha ya wee gaa ịzọpụta Buchan na nsonaazụ ndị Highlanders nọ n'okpuru Buchan malitere ịpụ.