Bernard de Gordon (fl. 1283-1308) was professor of medicine at one of the most renowned medieval medical centres, the University of Montpellier in Provence. His tracts were based on Greek and Arab predecessors, widely copied by his alumni and disseminated in other European countries. In Ireland, in the absence of universities, the reception and adaptation of his treatises centred on Irish medical schools. His best known and most important translator was Cormac Mac Duinnshleibhe (fl. 1459-82) who had obtained a bachelor’s degree in medicine abroad. This paper will examine the transmission and legacy of some of Bernard’s tracts in Irish medical learning.