Where was that place mentioned in my ancestor's will?
Here are some links that might help you find it.
Gazetteers of Place Names in the UK
http://www.gazetteer.co.uk/
Index of Place Names for Civil Registration
CuriousFox.com Database of every UK village and town with links to the exact location on modern and old maps. Each village has a page where you can add local and family history enquiries. You can also see what villages are nearby and look for surnames in counties or the whole of the UK
Modern Street Maps
Multimap - find by postcode or address
Streetmap - also allows searches by grid reference, telephone are, latitude & longitude etc
UK map24 - also has route planning option
Old Maps
First Series OS maps which show the old parish boundaries Limited access online but shop to purchase
Godfrey Reproductions of early large scale OS maps. Shop to purchase
Early maps of Bucks 17th-19th Century. Reproduced online
Pre 1974 Counties Map & Chapman Codes
19th Century maps of London
Old Maps Online - A graphical index of maps that are available online
National Library of Scotland - includes maps covering England. Now extended to include 24 inch to the mile OS
Berkshire Enclosure Online - includes a few parishes in the ancient county of Buckinghamshire
Parish Finders
Parloc gives grid reference & Eastings /Northings and surrounding parishes (Free downloadable program)
ParishFinder is online and does similar things but has a less friendly user interface
Latin/English Dictionary
Use this dictionary for quickly looking up the Latin words that occur in those early documents
(Updated 2016)