Aengus

Aengus (Old Irish Oengus), also called Aengus Og, the Young, and the Mac Oc, Young Son, is an Irish god associated with youth, love and poetic inspiration, a son of the Dagda and the river-goddess Boann. His conception is bound up with a trick of time: the Dagda held the sun still so that the whole affair passed in what seemed a single day, and so the child was said to be conceived and born between day and day.

In the best-known tale, Aislinge Oenguso (The Dream of Aengus), he falls sick with love for a maiden, Caer, whom he has seen only in dreams; he learns that she lives in alternate years as a woman and as a swan, and by choosing her in swan-form and becoming a swan himself he wins her, the two circling the lake together as birds, an image that has made Aengus a figure of romantic longing in later Irish literature. His home is the great Neolithic passage-tomb of Brug na Boinne (Newgrange), which in the myth he obtains from his father by a clever turn of words.

Aengus's home in myth, the Brug na Boinne, is not merely a poetic setting but one of the most carefully studied prehistoric monuments in Europe, and the identification of the two has given the god an unusually concrete archaeological anchor. Newgrange, the great passage tomb the name refers to, was built around 3200 BCE, centuries before the pyramids of Giza, and consists of a vast mound covering a long stone passage leading to a corbelled chamber. Its most celebrated feature was confirmed only in 1967, when the archaeologist Michael J. O'Kelly established that a specially built opening above the entrance, the roof-box, admits a narrow beam of sunlight along the passage to the chamber only around the winter solstice, a piece of Neolithic engineering precise enough to still work exactly as designed after five thousand years. Whether the builders who raised Newgrange had any concept resembling the god later called Aengus is unknowable, since the monument predates the Irish mythological texts by well over three thousand years, and the association is a medieval literary layer placed onto a much older structure.

The site's importance was recognised formally when Newgrange and the wider Brú na Bóinne complex, including the neighbouring tombs of Knowth and Dowth, were inscribed as a UNESCO World Heritage Site in 1993, and the solstice alignment now draws large public interest, with a lottery held each year for a small number of places inside the chamber at dawn on the solstice. Aengus's myth of winning the mound by a clever trick of words gave a much later, literate culture its own explanation for who owned this astonishing structure, built centuries after the stones themselves were raised.