Turgesius

Turgesius (died 845) (also called Turgeis, Tuirgeis, Turges, and Thorgest) was a Viking chief active in Ireland during the 9th-century. Turgesius Island, the principal island on Lough Lene, is named after him. It is not at all clear whether the names in the Irish annals represent the Old Norse Thurgestr or Old Danish Thorgísl.John O'Donovan and Charles Haliday independently identified him with Ragnar Loðbrók, but the identification is not generally accepted.

The sole reliable record of Turgesius is a report of his death in the Annals of Ulster. In 845 he was captured by Máel Sechnaill mac Máele Ruanaid of Clann Cholmáin who was High King of Ireland. These reports state that Turgesius was drowned in Lough Owel. Less certainly, the Annals of the Four Masters associate Turgesius with attacks on Connacht, Mide and the church at Clonmacnoise in the year before his death. It has been speculated that Muslim poet and diplomat Yahya ibn al-Hakam al-Bakri al-Jayyani (d. 864) may have paid a visit to the court of this Norse ruler. After the attack of the Vikings on the coast of al-Andalus in the year 844, he was sent north on a diplomatic mission.

No history is recorded for Turgesius in his native Scandinavia, and knowledge of him is based on the history of his conquests as recorded in Ireland and Great Britain. Giraldus Cambrensis (also known as Gerald of Wales) described Turgesius as one of the early Viking conquerors of Ireland. It is believed that Turgesius first came to Ireland in the year 820, but his arrival as a leader of his own force was in around 837. He led a fleet of 120 ships, half of which entered the River Boyne, and the other half the River Liffey. He took the settlement of Dublin by force from the native rural and fishing community. He built a strong fort, according to Scandinavian methods, on the hill where now stands Dublin Castle. From there, he launched further conquests into Ireland (Leinster and Munster), and across the Irish Sea to Wales.

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