Raghnall Ó Floinn joined the Museum in 1976 as Assistant Keeper in the Antiquities division, a post he held until 2003. As Head of Collections he has overall responsibility for the care and development of the collections and for research. His qualifications include an MA in Celtic Archaeology (UCD).
His special interests include: the medieval period, with a particular focus on reliquaries and the cult of relics; decorated metalwork; the archaeology of the early medieval Irish Church; and the history of collections.
He is a Fellow of the Society of Antiquaries of London and a Member of the Royal Irish Academy. He is the author of a number of papers and he has co-edited a number of books.