Poem (33qq. interspersed with 17 prose sections) addressed to Uilliam mac Seaáin mheic Oilbh Éaruis Búrc (†1591), beg. Mairg im dheaghaidh cheanglas comann, by Fearghal Óg Mac an Bhaird. Edition based on MS Maynooth B 8; with textual notes and English translation. Includes a lament for the same addressee, beg. Beannocht ar anmuin Uilliam, transcribed from RIA MS 23 L 17 (diplomatic text only, no translation).