Current translation for Crockham Hill
  crock derived from croc  – A crock, pitcher, waterpot or flagon,
  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.
  hill derived from hyll  – a hill
“Crock, pitcher, waterpot or flagon, hill denotes a piece of land surrounded with paling, wicker”
Place name translation provided by saxonhistory.co.uk