Callum Watson has PhD in History from the University of Edinburgh, with a focus on warfare, politics, and society in late medieval Scotland. He works for the National Trust for Scotland at the Battle of Bannockburn Visitor Centre, where he provides guided tours of the exhibition and the battlefield. He writes on various subjects relating to Scotland's fourteenth– and fifteenth–century history at Knight of the Two L's blog, drcallumwatson.blogspot.com, which is regularly featured in Dubh Ghlase newsletter of the Clan Douglas Society of North America, and can be found on Facebook www.facebook.com/DrCallumWatson and Instagram www.instagram.com/cpwatson1375. He has appeared in BBC's 'Rise of the Clans' episodes on Robert Bruce and James I, and in Channel 5's 'Britain's Lost Battlefields' episode on Bannockburn, as well as serving as one of the historical advisors for the Netflix film 'Outlaw King'. His recently published article appeared in the September episode of History Scotland, on non-noble Scots in Barbour's Bruce, and has been interviewed by the Herald to promote a presentation given as part of the History Scotland seminar series.