Longford barony derives its name from the town of Longford (from Irish Longphort Uí Fhearghail, "O'Fergal's riverside camp".

[1] Longford barony is located in northwestern County Longford: east of the River Shannon, north of the River Camlin, south of the Rinn River and Black River, and west of the Longford Hills.

Carn Clonhugh was a ritual centre for the Clan Hugh (Clann Aoidh).

[2] Below is a list of settlements in Longford barony:

This article related to the geography of County Longford, Ireland is a stub.