Ely Abbey became the cathedral of a newly formed bishopric in 1109 .
Composed in three books , it was written at Ely Abbey on the island of Ely in the fenlands of eastern Cambridgeshire .
Ely   became the cathedral of a newly formed bishopric in 1109 .
Composed in three books , it was written at Ely Abbey on the island of Ely in the fenlands of eastern Cambridgeshire .