Newtowncashel (Irish: Baile Nua an Chaisil, meaning 'new town of the fort')[1] is a village located near Lough Ree in County Longford, Ireland.

[2] Situated on the north-eastern shore of Lough Ree on the River Shannon, Newtowncashel was previously known as Cor na Dumhca in Irish - an ancient name meaning the 'Round Hill of the Cauldron'.

[6] George Calvert, the owner of a 15th-century tower house in the area, was involved in the colonisation of the Province of Maryland in America.

The ruins of the old parish church, St Catherine's, are on the side of Cashel Hill overlooking Lough Ree.

[3] During the period of the Penal Laws, when Catholic observances were outlawed, people in the parish of Cashel assembled for worship at mass rocks close to Lady Well (in Derrydarragh townland) and at Derryhaun.