The present volume contains a collection of essays to honour the enormous contribution by Professor Padraig A. Breatnach to learning in a diverse range of fields including Medieval Latin, Early Modern Irish, palaeography, literary history, eighteenth-century verse, and Modern Irish literature and language. The contributors engage with written material relating to early, medieval and modern Irish as well as with oral traditions in Gaelic-speaking areas of Ireland, Scotland and the Isle of Man. Cnuasach aisti ata curtha ar fail anseo in omos don Ollamh Padraig A. Breatnach, fear a bhfuil 'lorg na leabhar' go trom ar a chuid scolaireachta. Cuimsionn an t-abhar fein foinsi scriofa na Gaeilge on luathre anall go dti an treimhse chomhaimseartha chomh maith le foins beil Ghaeilge na hEireann, na hAlban agus Oilean Mhanann.