Saint Christopher is venerated by several Christian denominations as a martyr killed in the reign of the 3rd-century Roman emperor Decius, or alternatively under the emperor Maximinus Daia. There appears to be confusion due to the similarity in names "Decius" and "Daia". Churches and monasteries were named after him by the 7th century.

Rab is a town (grad) on the island of Rab in Croatia. According to the 2011 census the total population of the town was 8,065, whereas only 437 lived in the titular settlement (naselje). Rab, the settlement, is located on a small peninsula on the southwestern side of the island.