Cornish saint. Patron of St Columb Major and St Columb Minor (Cornwall), usually called Columba the Virgin, from medieval records. But Baring-Gould conjectures that this Columba was an Irishman, identical with Columba of Tir-da-Glas. The Cornish Church Calendar assigns no day to this saint.
O.D.E.P.N., s.v.;Baring-Gould and Fisher, i. 164–9.