Even though the publication of Johann Kaspar Zeuss's monumental (Zeuss 1853) marks the beginning of the modern, scientific study of the Old Irish language, short excerpts of the most important textual witnesses of Old Irish, the so-called Old Irish glosses, preserved in 8th-9th-century manuscripts on the European Continent, had appeared in print since the early 18th century. This article gives an overview of these early publications from the 18th and early 19th century by Johann Georg von Eckhart, Domenico Vallarsi, Lodovico Antonio Muratori, and Vittorio Amedeo Peyron, and assesses their role as early trailblazers in the study of Old Irish.