Wikipedia
Celeus or Keleus was the king of Eleusis in Greek mythology, husband of Metaneira and father of several daughters, who are called Callidice, Demo, Cleisidice and Callithoe in the Homeric Hymn to Demeter, and Diogeneia, Pammerope and Saesara by Pausanias.
In the Homeric Hymn to Demeter, Celeus was one of the original priests of Demeter, one of the first people to learn the secret rites and mysteries of Demeter's cult the Eleusinian Mysteries. Diocles, Eumolpos, Triptolemus and Polyxeinus were the others of the first priests.
While Demeter was searching for her daughter, having taken the form of an old woman called Doso, she received a hospitable welcome from Celeus, the king of Eleusis in Attica. He asked her to nurse Demophon, his youngest son by Metaneira. As a gift to Celeus, because of his hospitality, Demeter planned to make Demophon immortal by burning his mortal spirit away in the family hearth every night. She was unable to complete the ritual because Metaneira walked in on her one night and interfered with the process. Instead, Demeter chose to teach Triptolemus, the other son of Celeus (though he was ascribed different parentages as well), the art of agriculture and, from him, the rest of Greece learned to plant and reap crops. He flew across the land on a winged chariot while Demeter and Persephone cared for him, and helped him complete his mission of educating the whole of Greece on the art of agriculture.
Celeus was killed by Erichthonius in a war with Athens. His mourning daughters were afterwards transformed into doves by Demeter.
Celeus is a genus in the Picidae family of woodpeckers found in tropical and subtropical forests and woodlands of Central and South America. The genus contains 15 extant species. One, Kaempfer's woodpecker (C. obrieni), was believed to be extinct until a specimen was caught in 2006.
The species in the genus are medium-sized, 19 – 32 cm in length (with C. elegans the longest), and weigh between 63 and 172 grams. They have limited plumage colour with the head and crest mainly lighter in colour. The feet, tail, tongue and bill of the birds in the genus are adapted for the specialised resources required for its survival and reproduction (for example breeding sites and large food supplies). They are native residents and do not migrate. They are generally insectivorous but will eat seeds and fruits. The birds are monogamous with both sexes sharing nest and brooding care. Some species nest communally. Many live near humans but are seen as destructive in agricultural areas.