If you are curious to find out more about your fruit trees, have a look at these three excellent website listings which give lots of information for each variety:
www.fruitid.com catalogues nearly 900 apple and pear varieties with excellent photos and detailed identification clues, along with their properties.
www.orangepippin.com has descriptions of over 700 apple varieties as well as crab apples, pears, plums, cherries, apricots peaches and nectarines, including the origin, characteristics, disease resistance, identification and more.
Meanwhile www.devon-apples.co.uk has a more specific directory of some 200 apples, cherries and plums particular to the Westcountry. (This website is in the process of being updated and re-launched).