Little is known for certain about Elaeth's life, and his dates of birth and death are unknown. He lived in the 6th century. He is said to have been the son of Meurig ab Idno and his wife Onen Greg, the daughter of
Gwallog ap Llaennog. one calendar, apparently by mistake, gives the date as 11 November. He is the reputed founder of
St Eleth's Church, Amlwch, in the north of Anglesey. A holy well near there, known as "" in Welsh, was named after him, and was regarded as having healing qualities and providing a method of
divination. A nearby "priest" would interpret the behaviour and activities of an eel kept in the well; on some occasions, the eel would remain out of sight and those seeking answers would have to wait for its re-emergence. ==See also==