Gaelic literati were an elite and influential group in the social hierarchy of Irish lordships between c. 1300 and 1600. From their estates, they served Gaelic and Old English ruling families in the arts of history, law, medicine, and poetry. They farmed, kept guest-houses, conducted schools, and maintained networks of learning. In other capacities, they were involved in political assemblies. This book presents a framework for identifying and interpreting thesettings and built heritages of their estates in lordship borderscapes. It shows that a more textured definition of what this learned class represented can be achieved through the material record of the buildings and monuments they used, and where their lands were positioned in the political map. Whereliterati lived and worked are conceived as expressions of their intellectual and political cultures. Mediated by case studies of the landscapes of their estates, dwellings, and schools, the methodology is predominantly field based, using archaeological investigation and topographic and spatial analyses, and drawing on historical and literary texts, place-names and lore in referencing named people to places. More widely, the study contributes a landscape perspective to the growing body of workon autochthonous intellectual culture and the exercise of power by ruling families in late medieval and early modern Celtic societies.