The remains of the Castle can be visited
Portaferry Castle

Portaferry Castle is a small tower house in Portaferry, County Down, Northern Ireland, overlooking the harbour. It was built in the 16th century by William Le Savage. Portaferry Castle tower house is a State Care Historic Monument in the townland of Ballyphilip, in Borough of Ards, at grid ref: J5930 5085.
History+
The castle was probably built in the 16th century by a member of the Savage family. In 1635, Patrick Savage's brother-in-law, Sir James Montgomery of Rosemount (Greyabbey), repaired the castle by roofing and flooring it so that his sister could live in greater comfort there.
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Location: 54.3800, -5.5490