The Pipe rolls, sometimes called the Great rolls, or the Great Rolls of the Pipe are a collection of financial records maintained by the English Exchequer, or Treasury, and its successors. The earliest date from the 12th century, and the series extends, mostly complete, from then until 1833. They form the oldest continuous series of records concerning English governance kept by the English, British and United Kingdom governments, covering a span of about 700 years. The early medieval ones are especially useful for historical study, as they are some of the earliest financial records available from the Middle Ages. A similar set of records was developed for Normandy, which was ruled by the English kings from 1066 to 1205, but the Norman Pipe rolls have not survived in a continuous series lik