Graham S. Holton (editor) is principal tutor in the University of Strathclyde’s Postgraduate Programme in Genealogical Studies, co-author of Discover Your Scottish Ancestry: Internet and Traditional Resources and leader of the Battle of Bannockburn and Declaration of Arbroath Family History Projects. John Cleary is lecturer at Heriot-Watt University with specialist interest in Y-DNA and ancient DNA. Michelle Leonard is a professional genealogist and DNA detective specializing in unknown ancestor mysteries. Alasdair F. Macdonald is a lead tutor in the University of Strathclyde’s Postgraduate Programme. Iain McDonald is an astrophysicist at the University of Manchester and specialist in the advanced analysis of Y-DNA for genealogy.