Stutfall castle, near Lympne on a hill overlooking the Romney marshes. Lymn is the old name for the East Rother that once fell into the sea at Rye. It gave its name to the Saxon Shore fort Portus Lemanis and to the town.

The name of the river is from the old British base lemana which means 'elm'. Lac Leman is from the same root. A numerus of the Turnacenses is listed here in the Notitia Dignitatum.

Turnacenses = from Tournai