
Why this matters
A local castle; wider significance not recorded.
Overview
Port — Port is recorded as Castle — unclassified in Leitrim. Located on the E bank of the River Shannon where it takes a slight curve to the W, probably because rock is diverting it. The castle is marked, though not named on the Down Survey (1655-6) barony map, and is described as 'Port Castle ruins' on Taylor and Skinner's map of 1788 (Andrews 1969, 234).
Who built and held it
The saved account records: The site is now occupied by a farmyard and there are no visible remains of a castle at ground level, although it is possible that fabric of a later medieval building such as a tower house could be incorporated into existing buildings.
Attack, change and use
The saved account records: Located on the E bank of the River Shannon where it takes a slight curve to the W, probably because rock is diverting it.
What survives
The saved account records: The castle is marked, though not named on the Down Survey (1655-6) barony map, and is described as 'Port Castle ruins' on Taylor and Skinner's map of 1788 (Andrews 1969, 234).
Why it mattered
Port — Port matters because material evidence was found or examined here, allowing the place to answer questions that its name alone cannot. The source records: Archaeological testing (18E0591) in the vicinity discovered a small spread of burnt stone, but no evidence of the castle came to light (McHugh 2018). The examination or finds give physical evidence for date, use or human activity rather than leaving the account as guesswork.
History checked 15 August 2026 against the named sources below.
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