Mac Firbhisigh, Giolla Íosa Mór
In addition to collecting and transcribing these older texts, Giolla Íosa Mór was himself the composer of a long verse catalogue, ‘Imda gablán do chloind Chuind’, listing all the landowning families of Tír Fhiachrach and eulogising the head of each clan, thus demonstrating that he, like his predecessor Amhlaimh Mór, was a learned versifier as well as historian. Giolla Íosa Mór, who was the son of Donnchadh, son of another Giolla Íosa Mór Mac Firbhisigh, was only distantly related to the more famous seventeenth-century genealogist An Dubháltach Óg Mac Firbhisigh (qv) (d. 1671), although it appears both branches of the family were associated with the school of bardic learning at Lecan. Curiously enough for the head of a family which produced more than one set of annals recording notable events in Irish history, there is no record of the date of Giolla Íosa's death. Incidental marginalia in the Great Book of Lecan demonstrate that it was mostly compiled during the reign of Ruaidhri O'Dowda (c.1380–1417), with a section added in 1418 by one of the auxiliary scribes. Another indication of the date at which Giolla Íosa worked is that the section on the genealogy of the O'Neill chieftains refers to Niall Óg O'Neill (qv), who reigned as king of Tír Eoghain 1397–1403. However, Giolla Íosa's long topographical poem ‘Imda gablán do chloind Chuind’, which is entered into the Book of Lecan partly in his own hand, addresses Ruaidhrí's successor, Tadhg O'Dowda, as the newly succeeding chief, indicating that the historian was still active in 1417. The direct line of descent from Giolla Íosa was continued down at least to the seventeenth century through his son, Tomás Cam Mac Firbhisigh.