New Rochelle university (4)

I believe the answer is:

iona

(Other definitions for iona that I've seen before include "Scottish island of ancient saints" , "Isle of the Inner Hebrides, made famous by St Columba" , "St Columba's monastery isle" , "Island west of Mull" , "Hebridean island associated with St Columba" .)

I've seen this clue in The Wall Street Journal.

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