Trace local banished from Ireland for example (5)
I believe the answer is:
relic
'trace' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for relic that I've seen before include "Surviving artefact" , "Heirloom" , "Object from antiquity" , "Hangover from an earlier time" , "church treasure" .)