Jenny Helena Larsson is Professor of Baltic Languages and Director of the Centre for Indo-European Language and Culture at Stockholm University. She is co-PI of the National Centre of Excellence Centre for the Human Past and PI of the research programme Languages and Myths in Prehistory (LAMP). ORCID: https: //orcid.org/0000-0002-7251-3513 Thomas Olander is Professor of Indo-European Studies at the Roots of Europe centre at the University of Copenhagen. His research interests include linguistic reconstruction and the relationship between reconstructed languages and the archaeological record. He is PI of the research project The Indo-European Dark Ages Illuminated and a member of the research programme Languages and Myths in Prehistory (LAMP). ORCID: https: //orcid.org/0000-0002-7938-2827 Anders Richardt Jørgensen obtained his PhD in Indo-European linguistics from the University of Copenhagen in 2007. His research focuses on comparative Indo-European and Celtic linguistics, Middle Breton philology and Modern Breton dialectology. He is currently a researcher at Uppsala University in the research programme Languages and Myths in Prehistory (LAMP). ORCID: https: //orcid.org/0009-0003-5317-9227