Site of a timber castle,C1102AD.Possible siege castle of Arundel.Located just to the North of Ford church and may have had a longer life than just a siege castle.Arundel castle was 3 miles away,but,as the name of this place suggests,there was a crossing point of the River Arun nearby,and so the siege castle's purpose was to block river traffic to the castle and to police the crossing.
see http://www.castlefacts.info/contentpages/castledetails/castledetails.asp?country=England&countyid=40&county=Sussex&castleid=3797&latitude=50.823600769043&longitude=-0.578700006008148&uin=13593