This list is based on information supplied by readers. If you know of another set of indexes, or can complete any of the dates below, please use the link at the bottom of the page to contribute to this information.
Finding and obtaining copies of earlier wills are much more complicated tasks. A currently-available guide is Probate Jurisdictions - Where to look for wills (5th edn) by Jeremy Gibson and Else Churchill. More detailed guides (currently out of print) are: A.J. Camp. Wills and Their Whereabouts, 1974, and J.S.W. Gibson. Wills and Where to Find Them, Chichester, Phillimore, 1974, 210 p.
Images of 1700-1858 wills proved at the Prerogative Court of Canterbury can be purchased via The National Archives' online system for downloading digital images of public records. First read the TNA research guide on wills 1384-1858.
A place-name index is provided for each listing - there are references to places in all parts England as well as in other countries.
Peter Ward ran a website that accepted transcripts of wills and made them available at no charge - Will Transcriptions Online (note there may besimilar county-specific web sites too). This site has disappeared, please use the report link below to let me know if you find it somewhere! Meanwhile, there is a copy in The Wayback Machine