Tui is a town in Galicia (Spain), in the province of Pontevedra. It is located on the left bank of the Miño River, facing the Portuguese town of Valença. Its original local name, Tude, was mentioned by Pliny the Elder and by Ptolemy in the first century AD. It became an episcopal see no later than the 6th century, during the Suevic rule, when Bishop Anila went to the II Council of Braga.