High Quality Content by WIKIPEDIA articles! The Liber Eliensis (sometimes Historia Eliensis or Book of Ely) is a 12th-century English chronicle and history, written in Latin. Composed in three books, it was written at Ely Abbey on the island of Ely in the fenlands of eastern Cambridgeshire. Ely Abbey became the cathedral of a newly formed bishopric in 1109. Traditionally the author of the anonymous work has been given as Richard or Thomas, two monks at Ely, one of whom, Richard, has been identified with an official of the monastery, but some historians hold that neither Richard nor Thomas was the author.