Question: Repentance Tower was built in 1565, and served as a watchtower for what tower house that is located by the River Annan?
Sentence (from "Hoddom Castle"): It is located by the River Annan, 4 km south-west of Ecclefechan and the same distance north-west of Brydekirk in the parish of Cummertrees.
Relevant evidence: Yes