 In common with several nearby islands such as Jethou and <unk> , the name contains the Norman suffix " <unk> " which means a small hill or a mound . The name could have developed from the Breton words <unk> or <unk> , which means in or near water . Historically , there have also been a number of alternative forms of the name including <unk> , which was attested as early as the twelfth century , and <unk> , which was mentioned in the sixteenth century . 
