We have a completely obscure saint commemorated on the Irish calendars at November 23, Roinne. The Martyrology of Donegal simply records the name 'Roinni' as its sole entry for this day. The Martyrology of Gorman concludes its listing of half a dozen non-native saints with a mention of:
23. E.
is Roinni reidh rathmair.
and of Roinne, smooth and gracious.
23. E.
is Roinni reidh rathmair.
and of Roinne, smooth and gracious.
The name of Roinne does not occur on the Martyrology of Oengus at this date and I cannot find any further references to the saint.