St. Columba (of Spain)

From the Catholic Encyclopedia

A Spanish nun, of whom it is related that she was beheaded by the Moors at the monastery of Tabanos in 853. Her body is said to have been thrown into the Guadalquivir, but was rescued by the Christians. Her relics were kept and venerated in Old Castile at two churches, the priory of St. Columba and the royal Abbey of Our Lady at Nagara.

F.M. CAPES