The Tower of Hercules is the oldest known extant Roman lighthouse. Built in the 1st century, the tower is located on a peninsula about 2.4 km (1.5 mi) from the center of A Coruña, Galicia, in northwestern Spain. Until the 20th century, it was known as the Farum Brigantium. The Latin word farum is derived from the Greek Φάρος, Pharos, for the Lighthouse of Alexandria. The structure stands 55 metres (180 ft) tall and overlooks the North Atlantic coast of Spain. The tower was renovated in 1791.

Breogán is a character in the Lebor Gabála Érenn, a medieval Christian history of Ireland and the Irish. He is supposedly the son of Brath, and is described as an ancestor of the Gaels. The Lebor Gabála purports to be an account of how the Gaels descend from Adam through the sons of Noah and how they came to Ireland.