Baronies were sometimes subdivided, and occasionally combined. The parts of a subdivided barony were called "half-baronies", but had the same legal standing. Some subdivisions came about when new counties were formed, and the new boundary split a pre-existing barony. In three cases, there are adjacent half-baronies in neighbouring counties with the same name: Rathdown (Dublin—Wicklow), Fore (Meath—Westmeath), and Ballymoe (Galway—Roscommon). Subdivision happened especially in the 19th century, when qualifiers "Upper"/"Lower"(/"Middle"), "North"/"South", or "East/"West" were used for the half-baronies. The main basis for this subdivision was the Grand Jury (Ireland) Act, 1836, which empowered a county's grand jury to divide baronies of at least and unite baronies totalling at most . An 1837 act relaxed these restrictions for County Fermanagh, where many baronies were split by Lough Erne. The baronies of Iveagh, Muskerry, and Connello were each subdivided twice: Upper and Lower Iveagh each have Upper and Lower Halves; East and West Muskerry each have East and West Divisions; the western divisions split from Upper and Lower Connello were named Shanid and Glenquin respectively. When County Tipperary was split into North and South Ridings in 1838, the barony of Kilnamanagh was split into Upper and Lower half-baronies.