Counties of Ireland were later subdivided into smaller "liberties", which appear to have enjoyed the same privileges as their predecessors. The division of Leinster and Munster into smaller counties is commonly attributed to King John, mostly due to lack of prior documentary evidence, which has been destroyed. However, they may have had an earlier origin. These counties were: in Leinster: Carlow (also known as Catherlogh), Dublin, Kildare, Kilkenny, Louth (also known as Uriel), Meath, Wexford, Waterford; in Munster: Cork, Limerick, Kerry and Tipperary. It is thought that these counties did not have the administrative purpose later attached to them until late in the
County Limerick of County Cork, County Kerry and County Limerick]]. The main railway station in Limerick is called Colbert station, named after West Limerick man Con Colbert who was executed following the Easter Rising of 1916. Limerick has three operational railway lines passing through it, In addition, a line exists leading to Foynes however the last revenue service was in 2000. The M7 is the main road linking Limerick with Dublin. The M/N20 connects the county with Cork. The N21 road links Limerick with Tralee and travels through some of the main county towns such as Adare, Rathkeale, Newcastle West and Abbeyfeale.