Egerton MS 1782 is the index title of an early sixteenth-century Irish vellum manuscript housed in the Egerton Collection of the British Library, London.
The compilation dates from c. 1517 and is the work of several scribes of the Ó Maolconaire (anglicised: O'Mulconry), a learned family of lawyers and historians, known also for compiling Royal Irish Academy MS 23 N 10 later in the century.
In spite of its relatively late date (compared to, for instance, the Book of Leinster, Lebor na hUidre or the Yellow Book of Lecan), it is one of the most important documents for the study of early Irish literature. Some texts, such as Aislinge Oenguso, are preserved nowhere else.
Here follow some of the texts found in the manuscript:
Conchobarmac Nessa is the king of Ulster in the Ulster Cycle of Irish mythology. He rules from Emain Macha. He is usually said to be the son of the High King Fachtna Fáthach, although in some stories his father is the druid Cathbad, and he is usually known by his matronymic, mac Nessa: his mother is Ness, daughter of Eochaid Sálbuide, King of Ulster.
Emer, in modern Irish Eimhear or Éimhear and in Scottish Gaelic Eimhir, is the name of the daughter of Forgall Monach and the wife of the hero Cú Chulainn in the Ulster Cycle of Irish mythology.
Scáthach or Sgàthach is a figure in the Ulster Cycle of Irish mythology. She is a legendary Scottish warrior woman and martial arts teacher who trains the legendary Ulster hero Cú Chulainn in the arts of combat. Texts describe her homeland as Scotland (Alpeach); she is especially associated with the Isle of Skye, where her residence Dún Scáith stands. She is called "the Shadow" and "Warrior Maid" and is the rival and sister of Aífe, both of whom are daughters of Árd-Greimne of Lethra.
Ailill mac Máta is the king of the Connachta and the husband of queen Medb in the Ulster Cycle of Irish mythology. He rules from Cruachan.
Táin Bó Cúailnge, commonly known as The Táin or less commonly as The Cattle Raid of Cooley, is an epic from Irish mythology. It is often called "The Irish Iliad", although like most other early Irish literature, the Táin is written in prosimetrum, i.e. prose with periodic additions of verse composed by the characters. The Táin tells of a war against Ulster by Queen Medb of Connacht and her husband King Ailill, who intend to steal the stud bull Donn Cuailnge. Due to a curse upon the king and warriors of Ulster, the invaders are opposed only by the young demigod, Cú Chulainn.
In the Mythological Cycle of early Irish literature, the four treasures of the Tuatha Dé Danann are four magical items which the mythological Tuatha Dé Danann are supposed to have brought with them from the four island cities Murias, Falias, Gorias, and Findias when they arrived in Ireland.
The Ulster Cycle, formerly known as the Red Branch Cycle, is a body of medieval Irish heroic legends and sagas of the Ulaid. It is set far in the past, in what is now eastern Ulster and northern Leinster, particularly counties Armagh, Down and Louth. It focuses on the mythical Ulster king Conchobar mac Nessa and his court at Emain Macha, the hero Cú Chulainn, and their conflict with the Connachta and queen Medb. The longest and most important tale is the epic Táin Bó Cúailnge. The Ulster Cycle is one of the four 'cycles' of Irish mythology and legend, along with the Mythological Cycle, the Fianna Cycle and the Kings' Cycle.
Lebor na hUidre or the Book of the Dun Cow is an Irish vellum manuscript dating to the 12th century. It is the oldest extant manuscript in Irish. It is held in the Royal Irish Academy and is badly damaged: only 67 leaves remain and many of the texts are incomplete. It is named after an anachronistic legend that it was made from the hide of a dun cow by Saint Ciarán of Clonmacnoise.
In the Ulster Cycle of early Irish literature, the Lúin of Celtchar is the name of a long, fiery lance or spear belonging to Celtchar mac Uthechar and wielded by other heroes, such as Dubthach, Mac Cécht and Fedlimid.
Togail Bruidne Dá Derga is an Irish tale belonging to the Ulster Cycle of Irish mythology. It survives in three Old and Middle Irish recensions, it is part of the Book of Dun Cow. It recounts the birth, life, and death of Conaire Mór son of Eterscél Mór, a legendary High King of Ireland, who is killed at Da Derga's hostel by his enemies when he breaks his geasa. It is considered one of the finest Irish sagas of the early period, comparable to the better-known Táin Bó Cúailnge.
The Yellow Book of Lecan, or TCD MS 1318, is a late medieval Irish manuscript. It contains much of the Ulster Cycle of Irish mythology, besides other material. It is held in the Library of Trinity College Dublin.
Tochmarc Emire is one of the stories in the Ulster Cycle of Irish mythology and one of the longest when it received its form in the second recension (below). It concerns the efforts of the hero Cú Chulainn to marry Emer, who appears as his wife in other stories of the cycle, and his training in arms under the warrior-woman Scáthach. The tochmarc is one of the 'genres' of early Irish literature recognised in the manuscript corpus.
Fedelm is a female prophet and fili, or learned poet, in the Ulster Cycle of Irish mythology. She appears in the great epic Táin Bó Cuailnge, in which she foretells the armies of Medb and Ailill mac Máta will face against the Ulaid and their greatest champion, Cú Chulainn. A prophetess of the same name appears in another tale, which associates her with Cú Chulainn.
Cín Dromma Snechtai or Lebor Dromma Snechtai is a now lost early Irish manuscript, thought to have been written in the 8th century AD.
Mongán mac Fíachnai was an Irish prince of the Cruthin, a son of Fíachnae mac Báetáin. Little is certainly known of Mongán's life as only his death is recorded in the Irish annals. He appears as a character in the Cycles of the Kings where he is said to have been the son of Manannán mac Lir and perhaps a reincarnation of the legendary hero Finn mac Cumaill of the Fenian Cycle.
Compert Con Culainn is an early medieval Irish narrative about the conception and birth of the hero Cú Chulainn. Part of the Ulster Cycle of Irish mythology, it survives in two major versions.
Deda mac Sin was a prehistoric king of the Érainn of Ireland, possibly of the 1st century BC. Variant forms or spellings include Ded, Dedu, Dedad, Degad, Dega, Dego, Deguth and Daig, with some of these occurring as genitives although usage is entirely unsystematic, besides the rare occurrence of the obvious genitive Dedaid. He is the eponymous ancestor of the Clanna Dedad, and may also have been a King of Munster.
The Síl Conairi or "Seed of Conaire" were those Érainn septs of the legendary Clanna Dedad descended from the monarch Conaire Mór, son of Eterscél Mór, a descendant of Deda mac Sin, namely the Dál Riata, Múscraige, Corcu Duibne, and Corcu Baiscinn.
Scéla Conchobair maic Nessa or the Tidings of Conchobar mac Nessa is a title invented by Whitley Stokes for a short prose piece from the Ulster Cycle preserved in the 12th-century manuscript, the Book of Leinster. It is interpolated with lore not found elsewhere regarding the branches (halls) of the Ulster court at Emain Macha and the shields of the Ulstermen.
Eleanor Marie Knott was an Irish scholar, academic and lexicographer, as well as one of the first women elected to the Royal Irish Academy.