Patron of Lelant, Crowan, and Redruth (Cornwall), appears in no ancient calendars or Lives of the Saints. William Worcestre in 1478 noted: ‘Saint Uny, the brother of St Herygh [and of St Ia] lies in the parish church of St Uny near the town of Lallant, on the northern sea three miles from Mont-Myghell, his day is kept on the first day of February.’ At Maroony (? Merther Uny) farm in the parish of Wendron a fine Celtic cross was discovered on the site of a chapel of St Euny. In the parish of Sancreed near Land's End there was a ‘Chapel Euny’ with a sacred well, still reputed to have healing properties in the 18th and 19th centuries.
G. H. Doble, The Saints of Cornwall, i (1960), 79–88.