The volume contains five articles originally presented at the 9th Colloquium of Societas Celto-Slavica organized by G. Manchec-German at the University of Western Brittany (23-24 June 2018). N. Blanchard concentrates on J. Godest’s experience in the face of social cultural change in Brittany at the threshold of the 19th-20th centuries, and reveals how his autobiography serves as a literary text and a tool of cultural archaeology. T. Mikhailova identifies three active semantic models for the word ‘road’ and its derivations in their historical and social contexts in Indo-European and Celtic languages. K. Ó Donnchú provides an edition, translation and the study of the historical and literary context of a unique multilingual poem ‘Freagra ar et cætera Philip’ (‘An Answer to Philip’s Et Cætera’), found in the University College Dublin (UCD) Franciscan Collection manuscript A 32, fol. 5r, which exemplifies the strong interest of the Irish literati in so-called Rabelaisian humour. N. Pellen and T. Solliec study the population and language of Brittany applying the methods of genetic demography and dialectometry. The results obtained make it possible to open a window onto the history of Brittany, the origins of its people and language. S. Mac Mathúna surveys tangible and intangible aspects of the Irish fishing industries along with oral heritage of coastal communities in Ireland and Scotland. This volume is dedicated to the memory of Professor Dr.  Hildegard L. C. Tristram (1941-2020). Her obituary is presented by Prof. S. Mac  Mathúna, her former colleague and friend.