Great Britain. National Archives. DocumentsOnline. Notes: Available online at http://www.nationalarchives.gov.uk/documentsonline/ Abstract: Includes over one million wills, many from the medieval period, although none before AD 1000. Metadata for each document is provided and the images may be downloaded for a fee.
Nicolas, Nicholas H., ed. Testamenta Vetusta: Being Illustrations From Wills, of Manners, Customs, &c. As Well As of the Descents and Possessions of Many Distinguished Families. From the Reign of Henry the Second to the Accession of Queen Elizabeth. 2 Vols. London: Nichols & son, 1826.
Notes: Available online in MOML (subscription database)
Nichols, John, ed. A Collection of All the Wills, Now Known to Be Extant, of the Kings and Queens of England, Princes and Princesses of Wales, and Every Branch of the Blood Royal : From the Reign of William the Conqueror to That of Henry the Seventh Exclusive. London: J. Nichols, 1780.
Abstract: Reprinted by the Lawbook Exchange (Union, NJ) in 1999.
Raine, James, William Greenwell, and Herbert M. Wood, eds. Wills and Inventories Illustrative of the History, Manners, Language, Statistics, etc. of the Northern Counties of England from the Eleventh Century Downwards. 4 v. Publications of the Surtees Society, v.2, 38, 112 & 142. London, J.B. Nichols and Son, 1835-1929. OCLC: 277439358
Abstract: Chiefly from the registry at Durham.