Robert Brennan is Lecturer in in Italian Art, c. 1300-1500 at the Courtauld Institute of Art at the University of LondonFabian Jonietz is a scholar at the Central Institute for Art History, MunichRomana Sammern is a permanent postdoctoral scholar at the interuniversity organisation ‘Arts & Knowledges’ of the University of Salzburg/Mozarteum University