Current translation for Mersham
  mer derived from mære  – sea or lake (large body of water)
  sham 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.
“Sea or lake denotes a piece of land surrounded with paling, wicker”
Found in Domesday 1086AD
Name found:Merseham (Kent)
Place name translation provided by saxonhistory.co.uk