Selama abad pertengahan, sifat daerah yang terisolasi menyebabkan pendirian beberapa rumah keagamaan, termasuk biara-biara Ely, Thorney, Crowland, Ramsey dan Peterborough yang dikenal sebagai Lima Fen.[3][4]
^It is debated whether this area includes the fen areas of north Lincolnshire, such as the Isle of Axholme. Some scholars, such as Keith Lindley, include the Isle of Axholme as part of the Fenland, as it has the same kind of environment and a similar environmental and social history. But it is not contiguous with the rest of the East Anglian Fenland, nor was its drainage ever jointly organised with that of any of the main Fenland drainage areas. It is generally designated as a separate area.
^Wise, John; Noble, W. Mackreth (1882). Ramsey Abbey: Its Rise and Fall. Huntingdon: Ellis & Cooper. ISBN0-904701-10-7.
^Christian, Anne Hait (1984). The Search for Holmes, Robson, Hind, Steele and Graham Families of Cumberland and Northumberland, England. La Jolla, CA: Search. hlm. 7. ISBN0-9613723-0-3.