Martin Quinn is Professor of Management Accounting and Accounting History at Queen's Business School, Queen's University Belfast. Since 2011, his research has focused on historical accounting records in the brewing industry, particularly Guinness. He has published widely on Guinness's accounting practices and co-edited a volume on accounting history and brewing.

Kevin Egan is a historian specialising in the Guinness family. Originally trained in medieval and early modern history, his interest deepened after working at the Guinness Storehouse. He completed his PhD in 2024 on the family's influence in Dublin and is author of a biography of Walter Guinness, 1st Lord Moyne.