 In Cornwall, Winwaloe is the patron of the churches at Tremaine, St Wynwallow's Church, Landewednack, Gunwalloe and Poundstock as well as East Portlemouth in Devon and two lost chapels in Wales.His feast day is 28 April and Gunwalloe feast is celebrated on the last Sunday of April.The churches of St Twynnells, near Pembroke, Pembrokeshire and Wonastow, Monmouthshire may have been originally dedicated to him.