Court tombs take their name from a distinctive feature: an unroofed, semicircular or oval forecourt of upright stones opening onto one or more roofed gallery chambers. These were not simply burial places but sites of ceremony and communal ritual, and Mayo has an unusually dense concentration of them, scattered across townlands that have quietly absorbed millennia of weather and neglect.

The tomb at Tawnywaddyduff is documented in Ruaidhrí de Valera and Seán Ó Nualláin's survey of the megalithic tombs of County Mayo, published in 1964 as the second volume of their landmark national inventory. De Valera and Ó Nualláin spent years recording, measuring, and classifying these monuments across Ireland, and their Mayo volume remains a foundational reference for understanding how court tombs are distributed and how individual examples compare in their layout and state of preservation. The townland name itself, Tawnywaddyduff, derives from the Irish and carries the layered, compressed quality common to Mayo placenames, where landscape description and older Gaelic usage have fused over centuries into something that resists easy translation.