Current translation for Wrotham Heath
  wrot derived from wrot - snout probably meaning pigs
  ham derived from hamm - Denotes a piece of land surrounded with paling, wicker-work, etc., and so defended against water, which would otherwise wash it away, so a valley settlement or settlement with a jetty.
  heath derived from hæþ - heath or wasteland where heather grows
Place name translation provided by saxonhistory.co.uk