Prior to 1613 and the creation of County Londonderry, the barony of Loughinsholin, like that of Coleraine, Keenaght, and Tirkeeran, was divided up into "proportions" for the survey carried out in 1609.
In most instances each proportion lay within one of the ancient territories that consisted the barony, in which each proportion consisted of a number of townlands [REF].