Trinity College, Dublin MS 1317 [H.2.15B] is an autograph manuscript by Dubhaltach Mac Fhirbhisigh

Dubhaltach Mac Fhirbhisigh

Dubhaltach MacFhirbhisigh, also known as Dubhaltach Óg mac Giolla Íosa Mór mac Dubhaltach Mór Mac Fhirbhisigh, Duald Mac Firbis, Dudly Ferbisie, and Dualdus Firbissius was an Irish scribe, translator, historian and genealogist...

 (murdered 1671).

The most succinct description of the manuscript is by Irish historian, William O'Sullivan:

[It is] "the most personal of Dubhaltach's surviving manuscripts, including scribblings as well as texts written by himself and his grandfather, Dubhaltach Mor. Unhappily, because written on paper, hard wear has many items in a fragmentry conditions."

Contents

• two copies of the longer version of Cormac's Glossary; the first writer by and for Donnchad ... helped by Baothghalach and Flann (pp.13-40); the second by Dubhaltach's grandfather with help from Conair (mac Muiris) O Maolchonaire, but with additions by Dubhaltach himself
• part of the old Irish glossary miscalled O'Mulcontry's (pp 79-104)
• Duíl Laithne, by Dubhaltach
• a fragmentary glossary (pp 41-43)
• a copy of O'Davoran's glossary (pp 45-68) by his grandfather, "a better copy than that in B.L. MS Eg.88", at Park, County Galway
  County Galway
  County Galway is a county in Ireland. It is located in the West Region and is also part of the province of Connacht. It is named after the city of Galway. Galway County Council is the local authority for the county. There are several strongly Irish-speaking areas in the west of the county...
  
  , in 1569.

This is followed by eighteen pages in Dubhlatach's handwriting, which

"... has all the appearance of a student's copybook or roughwork book ... Most of the page [page 77] is covered with all kinds of scribbling, much of it in the nature of probationes pennae which are difficult to make sence of, or, in many cases, even to read ... it is difficult to make any sence of much of it, and matters are not helped by the employment of some rather unusual tachygrams."

The Sanas Cormac covers pages 79 to 103, followed on pages 104 to 106 by fragment of a etymological tract

Tract (literature)

A tract is a literary work, and in current usage, usually religious in nature. The notion of what constitutes a tract has changed over time. By the early part of the 21st century, these meant small pamphlets used for religious and political purposes, though far more often the former. They are...

 as far as the letter C, then an imperfect copy of the Uraicipt attributed to Cenn Fáelad mac Aillila

Cenn Fáelad mac Aillila

Cenn Fáelad mac Ailella was an Irish scholar renowned for having his memory markedly improve, possibly becoming eidetic, after suffering a head wound in battle.-Ancestry:...

 on pages 107 to 134. Pages 79 to 126, and 126b to 133, are in the handwriting of Dubhaltach's grandfather, Dubhaltach Mór.

Dubhaltach himself added a great many marginal notes in Irish

Irish language

Irish , also known as Irish Gaelic, is a Goidelic language of the Indo-European language family, originating in Ireland and historically spoken by the Irish people. Irish is now spoken as a first language by a minority of Irish people, as well as being a second language of a larger proportion of...

, Latin

Latin

Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

, and on a few occasions, in Greek

Greek language

Greek is an independent branch of the Indo-European family of languages. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. Its writing system has been the Greek alphabet for the majority of its history;...

, using Greek lettering.