I have created a map of England which shows some of the earliest documented examples of Buggy and similar names. The line drawn across the country shows the extent of Viking settlements. These settlements were located in the counties north of the line and as far as the Scottish border.
Chronologically they are:
1169 Bugg Found in Lincoln, Lincolnshire. From The Great Roll of the Pipe for the Sixteenth Year of the Reign of King Henry the Second A.D. 1169-1170 (1885) by The Pipe Roll Society, page 152. Published in London by Wyman and Sons.
1230 Bugge Gloucester, Gloucestershire. Found in Calender of the Records of the Corporation of Gloucester (1893) by W.H. Stevenson, page 134.
1241 Bugg Nottingham, Nottinghamshire. Found in Records of the Borough of Nottingham: Being a Series of Extracts from the Archives of the Corporation of Nottingham Vol. 1 1155-1399 (1882) edited by W.H. Stevenson, pp. 25-27. Published by Thomas Forman and Sons.
1242 Buggy Buttermere, Wiltshire
1259 Buggy Buttermere, Wiltshire
1280 Buggy Armscote, Warwickshire
 Illustration 4 between pages 116-117. Arnold M. (2006) The Vikings: Culture and Conquest. London: Continuum Books.