Place:Portsmouth and Portsea Island Liberty, Hampshire, England

Wikipedia has an article describing and defining a liberty and its use in English administration

To place the liberty within the county, see The Hundreds of Hampshire, a map from HMSO Boundary Commissioners, dated 1832, provided by A Vision of Britain through Time; or this map on Wikimedia Commons.

Portsmouth and Portsea are located on Portsea Island, located in the eastern Solent between the mainland of Hampshire and the Isle of Wight. Portsmouth and Portsea Liberty and its individual parishes are covered in Volume 3 of the Victoria County History for Hampshire

List of Parishes