Killycolly

Killycolly was one of the older names for the area of present-day Bailieborough in East Breifne. The Irish Coill an Chollaigh refers to a wood of the boar. Its later English town-name commemorates William Bailie, a Scottish planter granted the Tandragee lands by James I during the Plantation of Ulster. By 1613 he had built a fortified house, and by 1629 the surrounding demesne was enclosed.

The developing town was closely connected with the plantation estate. Samuel Lewis described Bailieborough in 1837 as a market and post-town on the Cootehill–Kells road, consisting mainly of one street. Its Monday market and several annual fairs served the surrounding agricultural country. Quarter sessions were held there, and the courthouse was enlarged in 1834.