Laigin. In the 5th century, the emerging Uí Néill dynasties from Connacht conquered areas of Westmeath, Meath and Offaly from the Uí Enechglaiss and Uí Failge of the Laigin. Uí Néill Ard Righ attempted to exact the Boroimhe Laighean (cattle-tribute) from the Laigin from that time, in the process becoming their traditional enemies. By the 8th century the rulers of Laigin had split into two dynasties: Northern Leinster dynasty: Murchad mac Brain (d. 727), King of Uí Dúnlainge, and joint leader of the Laigin Southern Leinster dynasty: Áed mac Colggen (d. 738), King of Uí Cheinnselaig, and joint leader of the Laigin After the death of the last Kildare-based King of Laigin, Murchad Mac Dunlainge in 1042, the kingship of Leinster reverted to the Uí Cheinnselaig sept based in the southeast in present-day County Wexford. This southern dynasty provided all the later Kings of Leinster. Kingdom of Ireland period Leinster includes the extended "English Pale", counties controlled directly from Dublin, at the beginning of the 1600s. The other three provinces had their own regional "Presidency" systems, based on a Welsh model of administration, in theory if not in fact, from the 1570s and 1580s up to the 1670s, and were considered separate entities. Gradually "Leinster" subsumed the term "The Pale", as the kingdom was pacified and the difference between the old Pale area and the wider province, now also under English administration, grew less distinct. The expansion of the province took in the territory of the ancient Kingdom of Mide encompassing much of present-day counties Meath, Westmeath and Longford with five west County Offaly baronies. Local lordships were incorporated during the Tudor conquest of Ireland and subsequent plantation schemes. Other boundary changes included County Louth, officially removed from Ulster in 1596, the baronies of Ballybritt and Clonlisk (formerly Éile Uí Chearbhaill in the county palatine of Tipperary) in Munster becoming part of Leinster in 1606, and the 'Lands of Ballymascanlon' transferred from Armagh to Louth circa 1630. The provincial borders were redrawn by Cromwell for administration and military reasons, and the Offaly parishes of Annally and Lusmagh, formerly part of Connacht, were transferred in 1660. The last major boundary changes within Leinster occurred with the formation of County Wicklow (1603–1606), from lands in the north of Carlow (which previously extended to the sea) and most of southern Dublin. Later minor changes dealt with "islands" of one county in another. By