An account of Daire in 1600 by Sir Henry Docwra is as follows: "A place in the manner of an island, comprehending within it 40 acres of land, whereon were the ruins of an old abbey, a bishop's house, two churches, and at one of the ends of it an old castle; the river called Lough Foyle encompassing it on one side, and a bog most commonly wet and not easily passable, except in two or three places, dividing it from the mainland." Docwra took Derry without opposition and set about building it into a defensive settlement, at this time Queen Elizabeth of England wanted the Foyle and Ballyshannon planted by Royalists to curb rebellion by the Gaelic lords.