Uther's story is first told by Geoffrey of Monmouth in his "History of Kings of Britain". As a one of the two younger brothers of the murdered King Constans, he apparently fled, at a young age, to the Royal Court of his cousin, KingBudic I of Brittany and here he was raised. As a young man, Uther returned to Britain with his elder brother, Ambrosius, and together they fought for their ancestral rights, eventually defeating the usurping Vortigern and placing Ambrosius on the throne.
Throughout Ambrosius' reign, Uther was his brother's staunchest ally. He commanded the King's forces in Ireland when, with Merlin, he acquired the "Giant's Ring" as a memorial to the dead of the "Night of the Long Knives". Later, it was Uther who was victorious over the rebellious King Pasgen of Buellt & Gwerthrynion at St. Davids (Mynyw).
Uther took the crown under the title of "Uther Pendragon" after a dragon-shaped comet appeared in the sky at the time of his brother's death. Most of his reign was taken up with campaigning against Saxon and Irish invaders in the North of Britain, where he held court at Pendragon Castle in Westmorland. He was, at first unsuccessful against the Angles of Bernicia. Osla, allied with the Jutish Octa, defeated Uther's armies at York (Caer-Ebrauc). However, he soon turned the tables at the ensuing Battle of Mount Damen. Uther later travelled even further north to help the Kings of Strathclyde pacify the Scots.
It is at this point that the most famous episode in Uther's life is related. Returning to London (Caer-Lundein), he metYgerna, the gorgeous wife of Gorlois, Duke of Cornwall, and fell instantly in love with her. Determined to see her again he invited the Duke to return to the Royal Court, but Gorlois could see what was going on and flattly refused. The two quarrelled and Gorlois and his wife fled to Cornwall. Uther invaded the Duke's lands, but still impatient to be with his new love, he persuaded Merlin to use his powers to magic him into Ygerna's bed. Thus, while Gorlois was being killed at nearby St. Dennis (Dimilioc), Uther was transformed into his likeness. He walked straight into the lion's den at Tintagel Catsle (Din-Tagell) and seduced the lovely Duchess. Sir Thomas Malory's "Le Morte D'Arthur" claims that the price for this deception was that Uther's son, the future King Arthur who was conceived on that night, had to be given to Merlin to be brought up as he saw fit. Robert de Boron says Uther was responsible for the founding of the Order of the Round Table.
In old age, the sick and aging Uther was drawn into a renewed war with the Northern Angles. When his commander,King Lot of Lothian (Gododdin) was unsuccessful, the King was carried to St. Albans (Caer-Mincip) to besiege the Anglian Princes himself. He won through, but the Germans poisoned the water-supply and Uther, along with many of his men, died in the days that followed.
Despite the popular myth to the contrary, King Uther Pendragon was not created from the imagination of Geoffrey of Monmouth. He appears several times in earlier Welsh tradition, both in his own right and as father of King Arthur. In the 10th century poem, Pa Gur ("Who is the Porter?"), one of Arthur's companions is given as "Mabon ap Mydron, servant of Uthir Pen Dragon". A poem in the Book of Taliesin (some of which may date back to the 6th century) mentions Arthur and is named after Uther himself as Marvnat Uthyr Pen. Ymiddiddan Arthur a'r Eryr ("The Colloquy of Arthur and the Eagle"), a poem contemporary with Geoffrey yet showing a primitive tradition independent of him, identifies the eagle as Eliwlat mab Madawc mab Uthyr and a nephew of Arthur. Uther also appears in several earlyTriads of the Island of Britain and the personal name is known from other pre-Galfridian sources.
As an epithet, Pendragon can be interpreted as something like "Foremost Leader," "Chief Warleader" or "Chief of Warriors". In the Cambridge version of Nennius' "History of the Britons," there is an addition to Arthur's name of the line "in British mab Uter, that is in Latin terrible son, because from his youth he was cruel". This unlikely reference to Arthur's early character, has encouraged some researchers, to see Uthr-Pen-Dragon as a mere title (Terrible Chief Warleader) which should be applied to a King of another name. The most popular suggestion appears to be King Meurig ap Tewdrig of Glywysing and Gwent, as suggested by Blackett & Wilson and Barber & Pykitt.
Geoffrey Ashe (1980) A Guidebook to Arthurian Britain. Peter C. Bartrum (1993) A Welsh Classical Dictionary. Rachel Bromwich (1961) Trioedd Ynys Prydein: The Welsh Triads. Ronan Coghlan (1991) The Encyclopaedia of Arthurian Legends. John Gwenogvryn Evans (1906) The Black Book of Carmarthen. John Gwenogvryn Evans (1910) Facsimile and Text of the Book of Taliesin. A.O.H. Jarman (1952) Llen Cymru II. Thomas Malory (1485) Le Morte D'Arthur. Geoffrey of Monmouth (1136) The History of the Kings of Britain. Nennius (c.829) The History of the Britons (Cambridge Edition). John Rous (c.1485) The History of the English Kings.