Many interesting maps can be found in the British Library's Online Gallery collections, which include the Crace Collection of Maps of London and The unveiling of Britain.
Here's a subset which DOR currently considers particularly relevant, regarding the search for Roger1's origins:
British Isles, 1250, by Matthew Paris
. . (Well, maybe not so relevant, but fairly interesting!)
Essex, 1576, by Christopher SaxtonKent, Sussex, Surry and Middlesex, 1579 , by Christopher Saxton
England and Wales, 1583, by Christopher SaxtonLondon panorama, 1588, by William Smith
London, 1593, by John Norden
Essex, 1594, by John NordenMiddlesex, 1611, by John Speed
London and Westmininster, and suburbs, 1654, by surveyor T. Porter.