After a battle in this city, Ulf the Quarrelsome traveled to a nearby island, cut his brother’s killer's stomach open, then wrapped him around a tree until all his innards came out. This city, whose name translates as “black pool,” was the site of sea battles between “dark foreigners” and “fair foreigners.” The Njals (15[1])Saga blames Gormlaith for inciting a battle in this city, which had been ruled by a man who was probably Ragnar Lodbrok’s son Ivar the Boneless. A battle in this city saw the defeat of its ruler (*) Sitric Silkbeard. This city’s Viking rule ended after the Battle of Clontarf, at which Brian Boru’s forces defeated those including the King of Leinster. This was the largest city in a country ruled by High Kings. (10[1])For 10 points, name this city, the largest city in Viking Ireland. ■END■